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100 results found for "fractional_exponent" in Class 10.

यदि \(\sqrt{x}=5\sqrt{2}\), तो \(x^{\frac{3}{2}}\) का मान क्या है?

If \(\sqrt{x}=5\sqrt{2}\), what is the value of \(x^{\frac{3}{2}}\)?

Explanation opens after your attempt
Correct Answer

A. \(250\sqrt{2}\)

Explanation

Simple Explanation

\(\sqrt{x}=5\sqrt{2}\) से (x=50), और \(x^{\frac{3}{2}}=x\sqrt{x}=50\cdot5\sqrt{2}=250\sqrt{2}\)। परीक्षा में \(x^{\frac{3}{2}}\) को \(x\sqrt{x}\) लिखें। / From \(\sqrt{x}=5\sqrt{2}\), (x=50), and \(x^{\frac{3}{2}}=x\sqrt{x}=50\cdot5\sqrt{2}=250\sqrt{2}\). In exams, write \(x^{\frac{3}{2}}\) as \(x\sqrt{x}\).

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(\left\(\frac{125x^{-9}}{64y^{12}}\right\)^{-\frac{1}{3}}) का सरल रूप क्या है?

What is the simplified form of (\left\(\frac{125x^{-9}}{64y^{12}}\right\)^{-\frac{1}{3}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{4x^{3}y^{4}}{5}\)

Explanation

Simple Explanation

(\left\(\frac{125x^{-9}}{64y^{12}}\right\)^{\frac{1}{3}}=\frac{5x^{-3}}{4y^{4}})। \(-\frac{1}{3}\) घात लेने पर व्युत्क्रम \(\frac{4x^{3}y^{4}}{5}\) मिलता है। / We get (\left\(\frac{125x^{-9}}{64y^{12}}\right\)^{\frac{1}{3}}=\frac{5x^{-3}}{4y^{4}}). The power \(-\frac{1}{3}\) gives the reciprocal \(\frac{4x^{3}y^{4}}{5}\).

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(\left\(125^{\frac{2}{3}}\right\)\cdot\left\(25^{-\frac{3}{2}}\right\)) का मान क्या है?

What is the value of (\left\(125^{\frac{2}{3}}\right\)\cdot\left\(25^{-\frac{3}{2}}\right\))?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{5}\)

Explanation

Simple Explanation

(125^{\frac{2}{3}}=(5)^{2}=25) और (25^{-\frac{3}{2}}=(5)^{-3}=\frac{1}{125})। गुणनफल \(\frac{1}{5}\) है। / Here (125^{\frac{2}{3}}=(5)^{2}=25) and (25^{-\frac{3}{2}}=(5)^{-3}=\frac{1}{125}). The product is \(\frac{1}{5}\).

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(\left\(\frac{25}{49}\right\)^{-\frac{3}{2}}) का मान क्या है?

What is the value of (\left\(\frac{25}{49}\right\)^{-\frac{3}{2}})?

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Correct Answer

A. \(\frac{343}{125}\)

Explanation

Simple Explanation

(\left\(\frac{25}{49}\right\)^{\frac{1}{2}}=\frac{5}{7}), इसलिए (\left\(\frac{25}{49}\right\)^{-\frac{3}{2}}=\left\(\frac{5}{7}\right\)^{-3}=\frac{343}{125})। परीक्षा में पहले वर्गमूल निकालें। / Since (\left\(\frac{25}{49}\right\)^{\frac{1}{2}}=\frac{5}{7}), (\left\(\frac{25}{49}\right\)^{-\frac{3}{2}}=\left\(\frac{5}{7}\right\)^{-3}=\frac{343}{125}). In exams, take the square root first.

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(\left\(25^{\frac{3}{2}}\right\)\cdot\left\(125^{-\frac{2}{3}}\right\)) का मान क्या है?

What is the value of (\left\(25^{\frac{3}{2}}\right\)\cdot\left\(125^{-\frac{2}{3}}\right\))?

Explanation opens after your attempt
Correct Answer

B. (5)

Explanation

Simple Explanation

(25^{\frac{3}{2}}=\(5^{2}\)^{\frac{3}{2}}=5^{3}) और (125^{-\frac{2}{3}}=\(5^{3}\)^{-\frac{2}{3}}=5^{-2})। गुणनफल (5) है। / Here (25^{\frac{3}{2}}=\(5^{2}\)^{\frac{3}{2}}=5^{3}) and (125^{-\frac{2}{3}}=\(5^{3}\)^{-\frac{2}{3}}=5^{-2}). The product is (5).

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(\left\(\frac{81}{256}\right\)^{-\frac{3}{4}}) का मान क्या है?

What is the value of (\left\(\frac{81}{256}\right\)^{-\frac{3}{4}})?

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Correct Answer

A. \(\frac{64}{27}\)

Explanation

Simple Explanation

(\left\(\frac{81}{256}\right\)^{\frac{1}{4}}=\frac{3}{4}), इसलिए (\left\(\frac{81}{256}\right\)^{-\frac{3}{4}}=\left\(\frac{3}{4}\right\)^{-3}=\frac{64}{27})। परीक्षा में पहले चौथा मूल निकालें। / Since (\left\(\frac{81}{256}\right\)^{\frac{1}{4}}=\frac{3}{4}), (\left\(\frac{81}{256}\right\)^{-\frac{3}{4}}=\left\(\frac{3}{4}\right\)^{-3}=\frac{64}{27}). In exams, take the fourth root first.

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यदि \(\sqrt{x}=4\sqrt{3}\), तो \(x^{\frac{3}{2}}\) का मान क्या है?

If \(\sqrt{x}=4\sqrt{3}\), what is the value of \(x^{\frac{3}{2}}\)?

Explanation opens after your attempt
Correct Answer

A. \(192\sqrt{3}\)

Explanation

Simple Explanation

\(\sqrt{x}=4\sqrt{3}\) से (x=48), और \(x^{\frac{3}{2}}=x\sqrt{x}=48\cdot4\sqrt{3}=192\sqrt{3}\)। परीक्षा में \(x^{\frac{3}{2}}\) को \(x\sqrt{x}\) लिखें। / From \(\sqrt{x}=4\sqrt{3}\), (x=48), and \(x^{\frac{3}{2}}=x\sqrt{x}=48\cdot4\sqrt{3}=192\sqrt{3}\). In exams, write \(x^{\frac{3}{2}}\) as \(x\sqrt{x}\).

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(\left\(\frac{64x^{-6}}{27y^{9}}\right\)^{-\frac{1}{3}}) का सरल रूप क्या है?

What is the simplified form of (\left\(\frac{64x^{-6}}{27y^{9}}\right\)^{-\frac{1}{3}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{3x^{2}y^{3}}{4}\)

Explanation

Simple Explanation

(\left\(\frac{64x^{-6}}{27y^{9}}\right\)^{\frac{1}{3}}=\frac{4x^{-2}}{3y^{3}})। \(-\frac{1}{3}\) घात लेने पर व्युत्क्रम \(\frac{3x^{2}y^{3}}{4}\) मिलता है। / We get (\left\(\frac{64x^{-6}}{27y^{9}}\right\)^{\frac{1}{3}}=\frac{4x^{-2}}{3y^{3}}). The power \(-\frac{1}{3}\) gives the reciprocal \(\frac{3x^{2}y^{3}}{4}\).

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(\left\(64^{\frac{2}{3}}\right\)\cdot\left\(8^{-\frac{4}{3}}\right\)) का मान क्या है?

What is the value of (\left\(64^{\frac{2}{3}}\right\)\cdot\left\(8^{-\frac{4}{3}}\right\))?

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Correct Answer

A. (1)

Explanation

Simple Explanation

(64^{\frac{2}{3}}=(4)^{2}=16) और (8^{-\frac{4}{3}}=(2)^{-4}=\frac{1}{16})। गुणनफल (1) है। / Here (64^{\frac{2}{3}}=(4)^{2}=16) and (8^{-\frac{4}{3}}=(2)^{-4}=\frac{1}{16}). The product is (1).

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(\left\(\frac{16}{81}\right\)^{-\frac{3}{4}}) का मान क्या है?

What is the value of (\left\(\frac{16}{81}\right\)^{-\frac{3}{4}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{27}{8}\)

Explanation

Simple Explanation

(\left\(\frac{16}{81}\right\)^{\frac{1}{4}}=\frac{2}{3}), इसलिए (\left\(\frac{16}{81}\right\)^{-\frac{3}{4}}=\left\(\frac{2}{3}\right\)^{-3}=\frac{27}{8})। परीक्षा में चौथा मूल पहले निकालें। / Since (\left\(\frac{16}{81}\right\)^{\frac{1}{4}}=\frac{2}{3}), (\left\(\frac{16}{81}\right\)^{-\frac{3}{4}}=\left\(\frac{2}{3}\right\)^{-3}=\frac{27}{8}). In exams, take the fourth root first.

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(\left\(49^{\frac{3}{2}}\right\)\cdot\left\(343^{-\frac{2}{3}}\right\)) का मान क्या है?

What is the value of (\left\(49^{\frac{3}{2}}\right\)\cdot\left\(343^{-\frac{2}{3}}\right\))?

Explanation opens after your attempt
Correct Answer

A. (1)

Explanation

Simple Explanation

(49^{\frac{3}{2}}=\(7^{2}\)^{\frac{3}{2}}=7^{3}) और (343^{-\frac{2}{3}}=\(7^{3}\)^{-\frac{2}{3}}=7^{-2})। गुणनफल \(7^{1}=7\) है। / Here (49^{\frac{3}{2}}=\(7^{2}\)^{\frac{3}{2}}=7^{3}) and (343^{-\frac{2}{3}}=\(7^{3}\)^{-\frac{2}{3}}=7^{-2}). The product is \(7^{1}=7\).

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(\left\(\frac{64}{125}\right\)^{-\frac{2}{3}}) का मान क्या है?

What is the value of (\left\(\frac{64}{125}\right\)^{-\frac{2}{3}})?

Explanation opens after your attempt
Correct Answer

B. \(\frac{25}{16}\)

Explanation

Simple Explanation

(\left\(\frac{64}{125}\right\)^{\frac{1}{3}}=\frac{4}{5}), इसलिए (\left\(\frac{64}{125}\right\)^{-\frac{2}{3}}=\left\(\frac{4}{5}\right\)^{-2}=\frac{25}{16})। परीक्षा में पहले घनमूल निकालें। / Since (\left\(\frac{64}{125}\right\)^{\frac{1}{3}}=\frac{4}{5}), (\left\(\frac{64}{125}\right\)^{-\frac{2}{3}}=\left\(\frac{4}{5}\right\)^{-2}=\frac{25}{16}). In exams, take the cube root first.

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यदि \(\sqrt{x}=3\sqrt{2}\), तो \(x^{\frac{3}{2}}\) का मान क्या है?

If \(\sqrt{x}=3\sqrt{2}\), what is the value of \(x^{\frac{3}{2}}\)?

Explanation opens after your attempt
Correct Answer

A. \(54\sqrt{2}\)

Explanation

Simple Explanation

\(\sqrt{x}=3\sqrt{2}\) से (x=18), और \(x^{\frac{3}{2}}=x\sqrt{x}=18\cdot3\sqrt{2}=54\sqrt{2}\)। परीक्षा में \(x^{\frac{3}{2}}\) को \(x\sqrt{x}\) लिखें। / From \(\sqrt{x}=3\sqrt{2}\), (x=18), and \(x^{\frac{3}{2}}=x\sqrt{x}=18\cdot3\sqrt{2}=54\sqrt{2}\). In exams, write \(x^{\frac{3}{2}}\) as \(x\sqrt{x}\).

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(\left\(\frac{27x^{-3}}{8y^{6}}\right\)^{-\frac{1}{3}}) का सरल रूप क्या है?

What is the simplified form of (\left\(\frac{27x^{-3}}{8y^{6}}\right\)^{-\frac{1}{3}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{2xy^{2}}{3}\)

Explanation

Simple Explanation

(\left\(\frac{27x^{-3}}{8y^{6}}\right\)^{\frac{1}{3}}=\frac{3x^{-1}}{2y^{2}}), इसलिए \(-\frac{1}{3}\) घात देने पर उसका व्युत्क्रम \(\frac{2xy^{2}}{3}\) है। परीक्षा में भिन्न घात के बाद ऋणात्मक संकेत को व्युत्क्रम मानें। / We get (\left\(\frac{27x^{-3}}{8y^{6}}\right\)^{\frac{1}{3}}=\frac{3x^{-1}}{2y^{2}}), so the power \(-\frac{1}{3}\) gives its reciprocal \(\frac{2xy^{2}}{3}\). In exams, treat the negative fractional power as a reciprocal after rooting.

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(\left\(32^{\frac{2}{5}}\right\)\cdot\left\(4^{-\frac{3}{2}}\right\)) का मान क्या है?

What is the value of (\left\(32^{\frac{2}{5}}\right\)\cdot\left\(4^{-\frac{3}{2}}\right\))?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{2}\)

Explanation

Simple Explanation

(32^{\frac{2}{5}}=\(2^{5}\)^{\frac{2}{5}}=2^{2}=4), और (4^{-\frac{3}{2}}=\(2^{2}\)^{-\frac{3}{2}}=2^{-3}=\frac{1}{8})। गुणनफल \(\frac{1}{2}\) है। / Here (32^{\frac{2}{5}}=\(2^{5}\)^{\frac{2}{5}}=2^{2}=4), and (4^{-\frac{3}{2}}=\(2^{2}\)^{-\frac{3}{2}}=2^{-3}=\frac{1}{8}). The product is \(\frac{1}{2}\).

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(\left\(\frac{9}{16}\right\)^{-\frac{3}{2}}) का मान क्या है?

What is the value of (\left\(\frac{9}{16}\right\)^{-\frac{3}{2}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{64}{27}\)

Explanation

Simple Explanation

(\left\(\frac{9}{16}\right\)^{\frac{1}{2}}=\frac{3}{4}), इसलिए (\left\(\frac{9}{16}\right\)^{-\frac{3}{2}}=\left\(\frac{3}{4}\right\)^{-3}=\frac{64}{27})। परीक्षा में वर्गमूल के बाद घन और उल्टा करें। / Since (\left\(\frac{9}{16}\right\)^{\frac{1}{2}}=\frac{3}{4}), (\left\(\frac{9}{16}\right\)^{-\frac{3}{2}}=\left\(\frac{3}{4}\right\)^{-3}=\frac{64}{27}). In exams, take the square root, cube, and invert.

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(\left\(27^{\frac{2}{3}}\right\)^{-1}\cdot\left\(81^{\frac{3}{4}}\right\)) का मान क्या है?

What is the value of (\left\(27^{\frac{2}{3}}\right\)^{-1}\cdot\left\(81^{\frac{3}{4}}\right\))?

Explanation opens after your attempt
Correct Answer

A. (3)

Explanation

Simple Explanation

\(27^{\frac{2}{3}}=9\), इसलिए पहला पद \(\frac{1}{9}\) है, और \(81^{\frac{3}{4}}=27\)। गुणनफल (3) है। / Here \(27^{\frac{2}{3}}=9\), so the first factor is \(\frac{1}{9}\), and \(81^{\frac{3}{4}}=27\). The product is (3).

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(\left\(\frac{125}{216}\right\)^{-\frac{2}{3}}) का मान क्या है?

What is the value of (\left\(\frac{125}{216}\right\)^{-\frac{2}{3}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{36}{25}\)

Explanation

Simple Explanation

(\left\(\frac{125}{216}\right\)^{\frac{1}{3}}=\frac{5}{6}), इसलिए (\left\(\frac{125}{216}\right\)^{-\frac{2}{3}}=\left\(\frac{5}{6}\right\)^{-2}=\frac{36}{25})। परीक्षा में पहले घनमूल और फिर ऋणात्मक घात लें। / Since (\left\(\frac{125}{216}\right\)^{\frac{1}{3}}=\frac{5}{6}), (\left\(\frac{125}{216}\right\)^{-\frac{2}{3}}=\left\(\frac{5}{6}\right\)^{-2}=\frac{36}{25}). In exams, take the cube root first and then apply the negative power.

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(\left\(81x^{4}\right\)^{\frac{1}{2}}) का सरल रूप क्या है, जहाँ \(x\ge0\)?

What is the simplified form of (\left\(81x^{4}\right\)^{\frac{1}{2}}), where \(x\ge0\)?

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Correct Answer

A. \(9x^{2}\)

Explanation

Simple Explanation

(\left\(81x^{4}\right\)^{\frac{1}{2}}=\sqrt{81x^{4}}=9x^{2})। परीक्षा में वर्गमूल में घात आधी हो जाती है। / (\left\(81x^{4}\right\)^{\frac{1}{2}}=\sqrt{81x^{4}}=9x^{2}). In exams, the exponent becomes half under a square root.

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(\left\(16^{-\frac{3}{4}}\right\)\cdot8^{\frac{2}{3}}) का मान क्या है?

What is the value of (\left\(16^{-\frac{3}{4}}\right\)\cdot8^{\frac{2}{3}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{2}\)

Explanation

Simple Explanation

(16^{-\frac{3}{4}}=\(2^{4}\)^{-\frac{3}{4}}=2^{-3}) और (8^{\frac{2}{3}}=\(2^{3}\)^{\frac{2}{3}}=2^{2}), इसलिए मान \(2^{-1}=\frac{1}{2}\) है। परीक्षा में घात के ऊपर घात को गुणा करें। / Here (16^{-\frac{3}{4}}=\(2^{4}\)^{-\frac{3}{4}}=2^{-3}) and (8^{\frac{2}{3}}=\(2^{3}\)^{\frac{2}{3}}=2^{2}), so the value is \(2^{-1}=\frac{1}{2}\). In exams, multiply powers of powers.

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यदि \(\sqrt{x}=x^{\frac{1}{2}}\) और (x>0), तो \(\sqrt{x^{3}}\cdot x^{-\frac{1}{2}}\) किसके बराबर है?

If \(\sqrt{x}=x^{\frac{1}{2}}\) and (x>0), then \(\sqrt{x^{3}}\cdot x^{-\frac{1}{2}}\) equals which expression?

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Correct Answer

A. (x)

Explanation

Simple Explanation

\(\sqrt{x^{3}}=x^{\frac{3}{2}}\), इसलिए \(x^{\frac{3}{2}}\cdot x^{-\frac{1}{2}}=x^{1}=x\)। परीक्षा में मूल को भिन्न घात में बदलें। / Since \(\sqrt{x^{3}}=x^{\frac{3}{2}}\), \(x^{\frac{3}{2}}\cdot x^{-\frac{1}{2}}=x^{1}=x\). In exams, convert radicals to fractional exponents.

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(\left\(\frac{27}{8}\right\)^{-\frac{2}{3}}) का मान क्या है?

What is the value of (\left\(\frac{27}{8}\right\)^{-\frac{2}{3}})?

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Correct Answer

A. \(\frac{4}{9}\)

Explanation

Simple Explanation

(\left\(\frac{27}{8}\right\)^{\frac{1}{3}}=\frac{3}{2}), इसलिए (\left\(\frac{27}{8}\right\)^{-\frac{2}{3}}=\left\(\frac{3}{2}\right\)^{-2}=\frac{4}{9})। परीक्षा में पहले घनमूल निकालें। / Since (\left\(\frac{27}{8}\right\)^{\frac{1}{3}}=\frac{3}{2}), (\left\(\frac{27}{8}\right\)^{-\frac{2}{3}}=\left\(\frac{3}{2}\right\)^{-2}=\frac{4}{9}). In exams, take the cube root first.

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यदि (x+1,2x+6,5x-2) समांतर श्रेणी के लगातार पद हैं, तो (x) और (d) क्या हैं?

If (x+1,2x+6,5x-2) are consecutive terms of an AP, what are (x) and (d)?

Explanation opens after your attempt
Correct Answer

A. \(x=\frac{13}{2},d=\frac{23}{2}\)

Explanation

Simple Explanation

अंतर बराबर करने पर (x+5=3x-8), इसलिए \(x=\frac{13}{2}\) और \(d=\frac{23}{2}\)। परीक्षा में भिन्न उत्तर से घबराएं नहीं। / Equating differences gives (x+5=3x-8), so \(x=\frac{13}{2}\) and \(d=\frac{23}{2}\). In exams, do not reject a fractional answer too quickly.

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अनुक्रम \(a_n=\frac{5n-3}{4}\) का सामान्य अंतर क्या है?

What is the common difference of \(a_n=\frac{5n-3}{4}\)?

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Correct Answer

A. \(\frac{5}{4}\)

Explanation

Simple Explanation

(n) का गुणांक \(\frac{5}{4}\) है। परीक्षा में भिन्न वाले रैखिक सूत्र में भी वही नियम लागू होता है। / The coefficient of (n) is \(\frac{5}{4}\). In exams, the same rule works for linear formulas with fractions.

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अनुक्रम \(a_n=\frac{3-2n}{5}\) का सामान्य अंतर क्या है?

What is the common difference of the sequence \(a_n=\frac{3-2n}{5}\)?

Explanation opens after your attempt
Correct Answer

C. \(-\frac{2}{5}\)

Explanation

Simple Explanation

(n) का गुणांक \(-\frac{2}{5}\) है, वही सामान्य अंतर है। परीक्षा में सूत्र को \(a_n=\alpha n+\beta\) जैसा पहचानें। / The coefficient of (n) is \(-\frac{2}{5}\), which is the common difference. In exams, identify the form \(a_n=\alpha n+\beta\).

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यदि \(\frac{x-1}{2}+\frac{y+1}{3}=8\) और \(\frac{x-1}{3}-\frac{y+1}{2}=-1\), तो (x) का मान क्या है?

If \(\frac{x-1}{2}+\frac{y+1}{3}=8\) and \(\frac{x-1}{3}-\frac{y+1}{2}=-1\), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

D. (13)

Explanation

Simple Explanation

मान लें (u=x-1) और (v=y+1)। (3u+2v=48), (2u-3v=-6) हल कर (u=13), इसलिए (x=14) नहीं; वापस रखते समय सावधानी रखें। / Let (u=x-1) and (v=y+1). Solve (3u+2v=48), (2u-3v=-6) and substitute back carefully.

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यदि \(\frac{x}{3}+\frac{y}{4}=7\) और \(\frac{x}{4}+\frac{y}{3}=8\), तो (x+y) का मान क्या है?

If \(\frac{x}{3}+\frac{y}{4}=7\) and \(\frac{x}{4}+\frac{y}{3}=8\), what is the value of (x+y)?

Explanation opens after your attempt
Correct Answer

C. (36)

Explanation

Simple Explanation

दोनों समीकरणों को (12) से गुणा करें। (4x+3y=84) और (3x+4y=96), जोड़ने पर (7x+7y=180)। / Multiply both equations by (12). This gives (4x+3y=84) and (3x+4y=96), so adding gives (7x+7y=180).

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समीकरणों \(\frac{x}{4}+\frac{y}{5}=6\) और \(\frac{x}{5}-\frac{y}{4}=1\) को सरल करके हल करने पर (x) का मान क्या है?

After simplifying and solving \(\frac{x}{4}+\frac{y}{5}=6\) and \(\frac{x}{5}-\frac{y}{4}=1\), what is (x)?

Explanation opens after your attempt
Correct Answer

C. (20)

Explanation

Simple Explanation

पहले समीकरण से (5x+4y=120) और दूसरे से (4x-5y=20)। विलोपन से (x=20) मिलता है। / The equations become (5x+4y=120) and (4x-5y=20). Elimination gives (x=20).

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यदि \(\frac{x}{2}+\frac{y}{3}=7\) और \(\frac{x}{3}+\frac{y}{2}=8\), तो (x+y) का मान क्या है?

If \(\frac{x}{2}+\frac{y}{3}=7\) and \(\frac{x}{3}+\frac{y}{2}=8\), what is the value of (x+y)?

Explanation opens after your attempt
Correct Answer

B. (18)

Explanation

Simple Explanation

पहले (6) से गुणा कर (3x+2y=42), (2x+3y=48) मिलते हैं। जोड़ने पर (5x+5y=90), इसलिए (x+y=18)। / Multiplying by (6) gives (3x+2y=42) and (2x+3y=48). Adding gives (5x+5y=90), so (x+y=18).

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रेखाएं (2x-5y=1) और (3x+2y=22) ग्राफ पर किस बिंदु पर मिलेंगी?

At which point will the lines (2x-5y=1) and (3x+2y=22) meet on the graph?

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Correct Answer

A. (\left\(\frac{112}{19},\frac{41}{19}\right\))

Explanation

Simple Explanation

उन्मूलन करने पर (19x=112), इसलिए \(x=\frac{112}{19}\) और \(y=\frac{41}{19}\)। ग्राफीय हल भिन्न निर्देशांक में भी हो सकता है। / Elimination gives (19x=112), so \(x=\frac{112}{19}\) and \(y=\frac{41}{19}\). A graphical solution may also have fractional coordinates.

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रेखाएं (7x-y=20) और (x+3y=12) का सही प्रतिच्छेद क्या है?

What is the correct intersection of (7x-y=20) and (x+3y=12)?

Explanation opens after your attempt
Correct Answer

B. (\left\(\frac{36}{11},\frac{32}{11}\right\))

Explanation

Simple Explanation

(y=7x-20) को (x+3y=12) में रखने पर (22x=72), इसलिए \(x=\frac{36}{11}\) और \(y=\frac{32}{11}\)। भिन्न निर्देशांक भी सही ग्राफीय समाधान हो सकते हैं। / Putting (y=7x-20) in (x+3y=12) gives (22x=72), so \(x=\frac{36}{11}\) and \(y=\frac{32}{11}\). Fractional coordinates can also be correct graphical solutions.

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यदि ग्राफ में दो रेखाओं का प्रतिच्छेद (\left\(\frac{5}{2},-\frac{3}{2}\right\)) है, तो कौन सा युग्म सही हो सकता है?

If the intersection of two lines on a graph is (\left\(\frac{5}{2},-\frac{3}{2}\right\)), which pair can be correct?

Explanation opens after your attempt
Correct Answer

A. \(2x+y=\frac{7}{2}\), \(x-2y=\frac{11}{2}\)

Explanation

Simple Explanation

(\left\(\frac{5}{2},-\frac{3}{2}\right\)) रखने पर \(2x+y=\frac{7}{2}\) और \(x-2y=\frac{11}{2}\) दोनों सत्य हैं। प्रतिच्छेद बिंदु को दोनों समीकरणों में जांचें। / Substituting (\left\(\frac{5}{2},-\frac{3}{2}\right\)) makes both \(2x+y=\frac{7}{2}\) and \(x-2y=\frac{11}{2}\) true. Check the intersection point in both equations.

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रेखाएं (5x+2y=23) और (x-3y=-4) ग्राफ पर किस बिंदु पर मिलेंगी?

At which point will the lines (5x+2y=23) and (x-3y=-4) meet on the graph?

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Correct Answer

A. (\left\(\frac{61}{17},\frac{43}{17}\right\))

Explanation

Simple Explanation

(x=3y-4) रखने पर (5(3y-4)+2y=23), इसलिए \(y=\frac{43}{17}\) और \(x=\frac{61}{17}\)। भिन्न निर्देशांक भी सही ग्राफीय समाधान हो सकते हैं। / Putting (x=3y-4) gives (5(3y-4)+2y=23), so \(y=\frac{43}{17}\) and \(x=\frac{61}{17}\). Fractional coordinates can also be correct graphical solutions.

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रेखाएं (6x-y=17) और (x+2y=9) का सही प्रतिच्छेद क्या है?

What is the correct intersection of (6x-y=17) and (x+2y=9)?

Explanation opens after your attempt
Correct Answer

A. (\left\(\frac{43}{13},\frac{37}{13}\right\))

Explanation

Simple Explanation

(y=6x-17) को (x+2y=9) में रखने पर (13x=43), इसलिए \(x=\frac{43}{13}\) और \(y=\frac{37}{13}\)। भिन्न निर्देशांक भी सही ग्राफीय समाधान हो सकते हैं। / Putting (y=6x-17) in (x+2y=9) gives (13x=43), so \(x=\frac{43}{13}\) and \(y=\frac{37}{13}\). Fractional coordinates can also be correct graphical solutions.

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यदि ग्राफ में दो रेखाओं का प्रतिच्छेद (\left\(-\frac{3}{2},4\right\)) है, तो कौन सा युग्म सही हो सकता है?

If the intersection of two lines on a graph is (\left\(-\frac{3}{2},4\right\)), which pair can be correct?

Explanation opens after your attempt
Correct Answer

A. (2x+y=1), \(x+2y=\frac{13}{2}\)

Explanation

Simple Explanation

(\left\(-\frac{3}{2},4\right\)) रखने पर (2x+y=1) और \(x+2y=\frac{13}{2}\) दोनों सत्य हैं। प्रतिच्छेद बिंदु को दोनों समीकरणों में जांचना चाहिए। / Substituting (\left\(-\frac{3}{2},4\right\)) makes both (2x+y=1) and \(x+2y=\frac{13}{2}\) true. The intersection point should be checked in both equations.

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रेखाएं (2x+3y=17) और (5x-2y=4) का सही प्रतिच्छेद क्या है?

What is the correct intersection of (2x+3y=17) and (5x-2y=4)?

Explanation opens after your attempt
Correct Answer

B. (\left\(\frac{46}{19},\frac{77}{19}\right\))

Explanation

Simple Explanation

उन्मूलन से (4x+6y=34) और (15x-6y=12), इसलिए (19x=46) और \(y=\frac{77}{19}\)। भिन्न निर्देशांक भी ग्राफीय समाधान हो सकते हैं। / By elimination, (4x+6y=34) and (15x-6y=12), so (19x=46) and \(y=\frac{77}{19}\). Fractional coordinates can also be graphical solutions.

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यदि दो रेखाओं का प्रतिच्छेद (\left\(\frac{7}{2},-\frac{1}{2}\right\)) है, तो कौन सा युग्म सही हो सकता है?

If the intersection of two lines is (\left\(\frac{7}{2},-\frac{1}{2}\right\)), which pair can be correct?

Explanation opens after your attempt
Correct Answer

A. (x-y=4), \(2x+y=\frac{13}{2}\)

Explanation

Simple Explanation

(\left\(\frac{7}{2},-\frac{1}{2}\right\)) रखने पर (x-y=4) और \(2x+y=\frac{13}{2}\) सत्य हैं। विकल्पों में बिंदु को दोनों समीकरणों में जांचें। / Substituting (\left\(\frac{7}{2},-\frac{1}{2}\right\)) makes (x-y=4) and \(2x+y=\frac{13}{2}\) true. Check the point in both equations.

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रेखाएं (4x+y=11) और (x-y=1) का सही प्रतिच्छेद कौन सा है?

What is the correct intersection of (4x+y=11) and (x-y=1)?

Explanation opens after your attempt
Correct Answer

B. (\left\(\frac{12}{5},\frac{7}{5}\right\))

Explanation

Simple Explanation

(y=x-1) रखने पर (4x+x-1=11), इसलिए \(x=\frac{12}{5}\) और \(y=\frac{7}{5}\)। ग्राफ में भिन्न निर्देशांक भी समाधान हो सकते हैं। / Putting (y=x-1) gives (4x+x-1=11), so \(x=\frac{12}{5}\) and \(y=\frac{7}{5}\). Fractional coordinates can also be graphical solutions.

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संख्या रेखा पर ( -0.3125 ) का सरल भिन्न रूप कौन सा है?

What is the simplest fractional form of ( -0.3125 ) on the number line?

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Correct Answer

A. \( -\frac{5}{16} \)

Explanation

Simple Explanation

\( -0.3125=-\frac{3125}{10000}=-\frac{5}{16} \)। दशमलव को भिन्न में बदलकर सरल करें। / \( -0.3125=-\frac{3125}{10000}=-\frac{5}{16} \). Convert the decimal into a fraction and simplify.

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यदि (r=0.375), तो संख्या रेखा पर (r) का सरल भिन्न रूप कौन सा है?

If (r=0.375), what is the simplest fractional form of (r) on the number line?

Explanation opens after your attempt
Correct Answer

A. \( \frac{3}{8} \)

Explanation

Simple Explanation

\(0.375=\frac{375}{1000}=\frac{3}{8}\)। दशमलव को भिन्न में बदलकर सरल करें। / \(0.375=\frac{375}{1000}=\frac{3}{8}\). Convert the decimal into a fraction and simplify.

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संख्या रेखा पर ( -0.625 ) का भिन्न रूप कौन सा है?

What is the fractional form of ( -0.625 ) on the number line?

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Correct Answer

A. \( -\frac{5}{8}\)

Explanation

Simple Explanation

\( -0.625=-\frac{625}{1000}=-\frac{5}{8}\)। पहले दशमलव को भिन्न में बदलें, फिर सरल करें। / \( -0.625=-\frac{625}{1000}=-\frac{5}{8}\). First convert the decimal to a fraction, then simplify.

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यदि (r) संख्या रेखा पर (0.125) पर है, तो (r) का भिन्न रूप कौन सा है?

If (r) is at (0.125) on the number line, what is the fractional form of (r)?

Explanation opens after your attempt
Correct Answer

A. \( \frac{1}{8}\)

Explanation

Simple Explanation

\(0.125=\frac{125}{1000}=\frac{1}{8}\)। दशमलव को भिन्न में बदलकर सरल करें। / \(0.125=\frac{125}{1000}=\frac{1}{8}\). Convert the decimal to a fraction and simplify.

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यदि (x) संख्या रेखा पर (1.25) है, तो (x) का भिन्न रूप कौन-सा है?

If (x) is (1.25) on the number line, which fractional form represents (x)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{5}{4}\)

Explanation

Simple Explanation

\(1.25=\frac{125}{100}=\frac{5}{4}\)। सांत दशमलव को हर \(10^n\) से भिन्न में बदलें। / \(1.25=\frac{125}{100}=\frac{5}{4}\). Convert terminating decimals using denominator \(10^n\).

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संख्या रेखा पर (1.25) को भिन्न में लिखकर कौन-सा बिंदु दर्शाएगा?

Which fractional point represents (1.25) on the number line?

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Correct Answer

A. \(\frac{5}{4}\)

Explanation

Simple Explanation

\(1.25=\frac{125}{100}=\frac{5}{4}\) है। दशमलव को सरल भिन्न में बदलकर स्थिति जल्दी मिलती है। / \(1.25=\frac{125}{100}=\frac{5}{4}\). Converting a decimal to a simple fraction helps locate it quickly.

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कौन सा व्यंजक बहुपद नहीं है क्योंकि चर की घात भिन्न है?

Which expression is not a polynomial because the variable has a fractional power?

Explanation opens after your attempt
Correct Answer

C. \(x^{\frac{3}{2}}+x+1\)

Explanation

Simple Explanation

\(x^{\frac{3}{2}}\) में चर की घात भिन्न है, इसलिए यह बहुपद नहीं है। बहुपद में घातें अऋणात्मक पूर्णांक होती हैं। / In \(x^{\frac{3}{2}}\), the power of the variable is fractional, so it is not a polynomial. In a polynomial, powers are non-negative integers.

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कौन सा व्यंजक (x) में बहुपद नहीं है लेकिन देखने में द्विघात जैसा लगता है?

Which expression is not a polynomial in (x) though it looks similar to a quadratic?

Explanation opens after your attempt
Correct Answer

C. \(x^2+\frac{1}{x}+4\)

Explanation

Simple Explanation

\(x^2+\frac{1}{x}+4\) में \(x^{-1}\) है, जो बहुपद में मान्य नहीं है। हर में चर हो तो सावधान रहें। / \(x^2+\frac{1}{x}+4\) contains \(x^{-1}\), which is not allowed in a polynomial. Be careful when the variable is in the denominator.

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निम्न में से कौन सा (x) में बहुपद नहीं है?

Which of the following is not a polynomial in (x)?

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Correct Answer

C. \(\frac{5}{x^2}+1\)

Explanation

Simple Explanation

\(\frac{5}{x^2}=5x^{-2}\) में ऋणात्मक घात है। बहुपद में ऐसी घात मान्य नहीं होती। / \(\frac{5}{x^2}=5x^{-2}\) has a negative power. Such powers are not allowed in a polynomial.

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क्या \(x^{\frac{1}{2}}+3\) (x) में बहुपद है?

Is \(x^{\frac{1}{2}}+3\) a polynomial in (x)?

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Correct Answer

B. नहींNo

Explanation

Simple Explanation

\(x^{\frac{1}{2}}\) में चर की घात पूर्ण संख्या नहीं है। बहुपद में चर की घात \(0,1,2,\ldots\) होनी चाहिए। / In \(x^{\frac{1}{2}}\), the power of the variable is not a whole number. In a polynomial, powers must be \(0,1,2,\ldots\).

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कौन-सा व्यंजक (x) में बहुपद नहीं है?

Which expression is not a polynomial in (x)?

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Correct Answer

C. \(\sqrt{x}+5\)

Explanation

Simple Explanation

\(\sqrt{x}=x^{\frac{1}{2}}\) में चर की घात भिन्न है इसलिए यह बहुपद नहीं है। परीक्षा में घात पूर्ण संख्या होनी चाहिए। / Since \(\sqrt{x}=x^{\frac{1}{2}}\), the variable has a fractional power, so it is not a polynomial. In exams, powers must be whole numbers.

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यदि (\left\(3x^{-2}y^{3}\right\)^{2}\cdot\left\(9x^{4}y^{-1}\right\)^{-1}) को \(cx^{r}y^{s}\) लिखा जाए, तो (c+r+s) का मान क्या है?

If (\left\(3x^{-2}y^{3}\right\)^{2}\cdot\left\(9x^{4}y^{-1}\right\)^{-1}) is written as \(cx^{r}y^{s}\), what is the value of (c+r+s)?

Explanation opens after your attempt
Correct Answer

B. (2)

Explanation

Simple Explanation

अभिव्यक्ति \(9x^{-4}y^{6}\cdot\frac{1}{9}x^{-4}y=x^{-8}y^{7}\) है। इसलिए (c=1), (r=-8), (s=7), और (c+r+s=0) होता है। / The expression is \(9x^{-4}y^{6}\cdot\frac{1}{9}x^{-4}y=x^{-8}y^{7}\). Thus (c=1), (r=-8), (s=7), and (c+r+s=0).

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यदि \(\frac{1}{\sqrt{m}+\sqrt{n}}=\sqrt{m}-\sqrt{n}\) और (m>n>0), तो (m-n) का मान क्या है?

If \(\frac{1}{\sqrt{m}+\sqrt{n}}=\sqrt{m}-\sqrt{n}\) and (m>n>0), what is the value of (m-n)?

Explanation opens after your attempt
Correct Answer

A. (1)

Explanation

Simple Explanation

दोनों पक्षों को \(\sqrt{m}+\sqrt{n}\) से गुणा करने पर (1=m-n) मिलता है। परीक्षा में संयुग्म गुणनफल सीधे लगाएं। / Multiplying both sides by \(\sqrt{m}+\sqrt{n}\) gives (1=m-n). In exams, apply the conjugate product directly.

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\(\frac{\sqrt{363}-2\sqrt{147}+3\sqrt{75}}{\sqrt{3}}\) का मान क्या है?

What is the value of \(\frac{\sqrt{363}-2\sqrt{147}+3\sqrt{75}}{\sqrt{3}}\)?

Explanation opens after your attempt
Correct Answer

C. (15)

Explanation

Simple Explanation

\(\sqrt{363}=11\sqrt{3}\), \(2\sqrt{147}=14\sqrt{3}\), और \(3\sqrt{75}=15\sqrt{3}\)। अंश \(12\sqrt{3}\) है, इसलिए मान (12) होना चाहिए। / Here \(\sqrt{363}=11\sqrt{3}\), \(2\sqrt{147}=14\sqrt{3}\), and \(3\sqrt{75}=15\sqrt{3}\). The numerator is \(12\sqrt{3}\), so the value should be (12).

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यदि (\left\(7^{x}\right\)^{2}\cdot7^{x-1}=16807), तो (x) का मान क्या है?

If (\left\(7^{x}\right\)^{2}\cdot7^{x-1}=16807), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

A. (2)

Explanation

Simple Explanation

बाएँ पक्ष \(7^{2x}\cdot7^{x-1}=7^{3x-1}\) है और \(16807=7^{5}\)। इसलिए (3x-1=5) और (x=2)। / The left side is \(7^{2x}\cdot7^{x-1}=7^{3x-1}\), and \(16807=7^{5}\). Hence (3x-1=5), so (x=2).

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(\left\(\frac{5}{8}\right\)^{-2}+\left\(\frac{8}{5}\right\)^{-2}) का मान क्या है?

What is the value of (\left\(\frac{5}{8}\right\)^{-2}+\left\(\frac{8}{5}\right\)^{-2})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{4721}{1600}\)

Explanation

Simple Explanation

(\left\(\frac{5}{8}\right\)^{-2}=\frac{64}{25}) और (\left\(\frac{8}{5}\right\)^{-2}=\frac{25}{64})। योग \(\frac{4096+625}{1600}=\frac{4721}{1600}\) है। / Here (\left\(\frac{5}{8}\right\)^{-2}=\frac{64}{25}) and (\left\(\frac{8}{5}\right\)^{-2}=\frac{25}{64}). The sum is \(\frac{4096+625}{1600}=\frac{4721}{1600}\).

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\(\frac{6b^{-3}+9b^{-3}}{3b^{-5}}\) का सरल रूप क्या है, जहाँ \(b\neq0\)?

What is the simplified form of \(\frac{6b^{-3}+9b^{-3}}{3b^{-5}}\), where \(b\neq0\)?

Explanation opens after your attempt
Correct Answer

A. \(5b^{2}\)

Explanation

Simple Explanation

ऊपर \(6b^{-3}+9b^{-3}=15b^{-3}\) है। \(\frac{15b^{-3}}{3b^{-5}}=5b^{2}\) मिलता है। / The numerator is \(6b^{-3}+9b^{-3}=15b^{-3}\). Thus \(\frac{15b^{-3}}{3b^{-5}}=5b^{2}\).

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यदि \(x^{2}-\frac{1}{x^{2}}=60\) और \(x-\frac{1}{x}=6\), तो \(x+\frac{1}{x}\) का मान क्या है?

If \(x^{2}-\frac{1}{x^{2}}=60\) and \(x-\frac{1}{x}=6\), what is the value of \(x+\frac{1}{x}\)?

Explanation opens after your attempt
Correct Answer

C. (10)

Explanation

Simple Explanation

(x^{2}-\frac{1}{x^{2}}=\left\(x-\frac{1}{x}\right\)\left\(x+\frac{1}{x}\right\)) है। इसलिए (60=6\left\(x+\frac{1}{x}\right\)) और मान (10) है। / We use (x^{2}-\frac{1}{x^{2}}=\left\(x-\frac{1}{x}\right\)\left\(x+\frac{1}{x}\right\)). Thus (60=6\left\(x+\frac{1}{x}\right\)), so the value is (10).

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यदि \(s=4+\sqrt{17}\), तो \(s^{2}-\frac{1}{s^{2}}\) का मान क्या है?

If \(s=4+\sqrt{17}\), what is the value of \(s^{2}-\frac{1}{s^{2}}\)?

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Correct Answer

A. \(16\sqrt{17}\)

Explanation

Simple Explanation

\(\frac{1}{s}=\sqrt{17}-4\), इसलिए \(s-\frac{1}{s}=8\) और \(s+\frac{1}{s}=2\sqrt{17}\)। अतः \(s^{2}-\frac{1}{s^{2}}=16\sqrt{17}\)। / Here \(\frac{1}{s}=\sqrt{17}-4\), so \(s-\frac{1}{s}=8\) and \(s+\frac{1}{s}=2\sqrt{17}\). Thus \(s^{2}-\frac{1}{s^{2}}=16\sqrt{17}\).

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\(\frac{24^{3}}{2^{6}\cdot3^{2}}\) का सरल रूप क्या है?

What is the simplified form of \(\frac{24^{3}}{2^{6}\cdot3^{2}}\)?

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Correct Answer

B. (6)

Explanation

Simple Explanation

(24^{3}=\(2^{3}\cdot3\)^{3}=2^{9}\cdot3^{3})। भाग देने पर \(2^{3}\cdot3=24\) मिलता है, इसलिए विकल्पों में सही मान नहीं है। / Since (24^{3}=\(2^{3}\cdot3\)^{3}=2^{9}\cdot3^{3}), division leaves \(2^{3}\cdot3=24\), so the correct value is not among the options.

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(\left\(\sqrt{29}+\sqrt{20}\right\)\left\(\sqrt{29}-\sqrt{20}\right\)-3^{2}) का मान क्या है?

What is the value of (\left\(\sqrt{29}+\sqrt{20}\right\)\left\(\sqrt{29}-\sqrt{20}\right\)-3^{2})?

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Correct Answer

A. (0)

Explanation

Simple Explanation

संयुग्म गुणनफल (29-20=9) है और \(3^{2}=9\)। इसलिए अंतर (0) है। / The conjugate product is (29-20=9), and \(3^{2}=9\). Hence the difference is (0).

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यदि \(16^{x}=1024\) और \(32^{y}=1024\), तो (x+y) का मान क्या है?

If \(16^{x}=1024\) and \(32^{y}=1024\), what is the value of (x+y)?

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A. \(\frac{9}{2}\)

Explanation

Simple Explanation

\(1024=2^{10}\), \(16^{x}=2^{4x}\) से \(x=\frac{5}{2}\), और \(32^{y}=2^{5y}\) से (y=2)। इसलिए योग \(\frac{9}{2}\) है। / Since \(1024=2^{10}\), \(16^{x}=2^{4x}\) gives \(x=\frac{5}{2}\), and \(32^{y}=2^{5y}\) gives (y=2). Hence the sum is \(\frac{9}{2}\).

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(\left\(\frac{9r^{-4}s^{3}}{81r^{2}s^{-5}}\right\)^{-1}) का सरल रूप क्या है?

What is the simplified form of (\left\(\frac{9r^{-4}s^{3}}{81r^{2}s^{-5}}\right\)^{-1})?

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Correct Answer

A. \(9r^{6}s^{-8}\)

Explanation

Simple Explanation

अंदर \(\frac{9r^{-4}s^{3}}{81r^{2}s^{-5}}=\frac{1}{9}r^{-6}s^{8}\) है। (-1) घात लेने पर \(9r^{6}s^{-8}\) मिलता है। / Inside, \(\frac{9r^{-4}s^{3}}{81r^{2}s^{-5}}=\frac{1}{9}r^{-6}s^{8}\). Raising to (-1) gives \(9r^{6}s^{-8}\).

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यदि \(x=\sqrt{11}-\sqrt{6}\), तो \(x^{2}+2\sqrt{66}\) का मान क्या है?

If \(x=\sqrt{11}-\sqrt{6}\), what is the value of \(x^{2}+2\sqrt{66}\)?

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Correct Answer

C. (17)

Explanation

Simple Explanation

\(x^{2}=11+6-2\sqrt{66}=17-2\sqrt{66}\)। इसलिए \(x^{2}+2\sqrt{66}=17\)। / Since \(x^{2}=11+6-2\sqrt{66}=17-2\sqrt{66}\), \(x^{2}+2\sqrt{66}=17\).

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\(\frac{5^{-2}+5^{-3}}{5^{-4}}\) का मान क्या है?

What is the value of \(\frac{5^{-2}+5^{-3}}{5^{-4}}\)?

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Correct Answer

A. (30)

Explanation

Simple Explanation

\(5^{-2}+5^{-3}=\frac{1}{25}+\frac{1}{125}=\frac{6}{125}\) और \(5^{-4}=\frac{1}{625}\)। भाग देने पर (30) मिलता है। / Here \(5^{-2}+5^{-3}=\frac{1}{25}+\frac{1}{125}=\frac{6}{125}\), and \(5^{-4}=\frac{1}{625}\). Division gives (30).

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यदि \(p=8-\sqrt{63}\), तो \(\frac{1}{p}-p\) का मान क्या है?

If \(p=8-\sqrt{63}\), what is the value of \(\frac{1}{p}-p\)?

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Correct Answer

A. \(2\sqrt{63}\)

Explanation

Simple Explanation

\(\frac{1}{8-\sqrt{63}}=8+\sqrt{63}\), क्योंकि (64-63=1) है। इसलिए \(\frac{1}{p}-p=2\sqrt{63}\)। / Since \(\frac{1}{8-\sqrt{63}}=8+\sqrt{63}\), because (64-63=1). Therefore, \(\frac{1}{p}-p=2\sqrt{63}\).

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कौन-सा विकल्प \(\frac{x^{12}-4096}{x^{6}-64}\) का सरल रूप है, जहाँ \(x^{6}\neq64\)?

Which option is the simplified form of \(\frac{x^{12}-4096}{x^{6}-64}\), where \(x^{6}\neq64\)?

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Correct Answer

B. \(x^{6}+64\)

Explanation

Simple Explanation

(x^{12}-4096=\(x^{6}\)^{2}-64^{2}=\(x^{6}-64\)\(x^{6}+64\))। समान गुणनखंड कटने पर \(x^{6}+64\) मिलता है। / Since (x^{12}-4096=\(x^{6}\)^{2}-64^{2}=\(x^{6}-64\)\(x^{6}+64\)), cancelling the common factor gives \(x^{6}+64\).

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\(\sqrt[3]{343a^{15}b^{12}}\) का सरल रूप क्या है?

What is the simplified form of \(\sqrt[3]{343a^{15}b^{12}}\)?

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Correct Answer

A. \(7a^{5}b^{4}\)

Explanation

Simple Explanation

\(\sqrt[3]{343}=7\), \(\sqrt[3]{a^{15}}=a^{5}\), और \(\sqrt[3]{b^{12}}=b^{4}\)। परीक्षा में घनमूल में घातों को (3) से भाग दें। / We have \(\sqrt[3]{343}=7\), \(\sqrt[3]{a^{15}}=a^{5}\), and \(\sqrt[3]{b^{12}}=b^{4}\). In exams, divide exponents by (3) under a cube root.

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यदि (\left\(x^{4}y^{-3}\right\)^{k}=x^{16}y^{-12}), तो (k) का मान क्या है?

If (\left\(x^{4}y^{-3}\right\)^{k}=x^{16}y^{-12}), what is the value of (k)?

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Correct Answer

C. (4)

Explanation

Simple Explanation

बाएँ पक्ष में घातें (4k) और (-3k) हैं। (4k=16) और (-3k=-12) दोनों से (k=4) मिलता है। / The left side has exponents (4k) and (-3k). Both (4k=16) and (-3k=-12) give (k=4).

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(\left\(\frac{x^{-4}y^{5}}{z^{-2}}\right\)^{-1}\cdot\frac{y^{3}}{x^{2}z^{4}}) का सरल रूप क्या है?

What is the simplified form of (\left\(\frac{x^{-4}y^{5}}{z^{-2}}\right\)^{-1}\cdot\frac{y^{3}}{x^{2}z^{4}})?

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Correct Answer

A. \(\frac{x^{2}}{y^{2}z^{2}}\)

Explanation

Simple Explanation

अंदर \(\frac{x^{-4}y^{5}}{z^{-2}}=x^{-4}y^{5}z^{2}\), इसलिए उल्टा \(x^{4}y^{-5}z^{-2}\) है। \(\frac{y^{3}}{x^{2}z^{4}}\) से गुणा करने पर \(\frac{x^{2}}{y^{2}z^{6}}\) मिलता है। / Inside, \(\frac{x^{-4}y^{5}}{z^{-2}}=x^{-4}y^{5}z^{2}\), so its reciprocal is \(x^{4}y^{-5}z^{-2}\). Multiplying by \(\frac{y^{3}}{x^{2}z^{4}}\) gives \(\frac{x^{2}}{y^{2}z^{6}}\).

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यदि \(y=7+4\sqrt{3}\), तो \(y+\frac{1}{y}\) का मान क्या है?

If \(y=7+4\sqrt{3}\), what is the value of \(y+\frac{1}{y}\)?

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Correct Answer

A. (14)

Explanation

Simple Explanation

\(\frac{1}{7+4\sqrt{3}}=7-4\sqrt{3}\), क्योंकि (49-48=1) है। योग (14) मिलता है। / We have \(\frac{1}{7+4\sqrt{3}}=7-4\sqrt{3}\), because (49-48=1). The sum is (14).

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\(\frac{\sqrt{300}+\sqrt{192}-\sqrt{108}}{\sqrt{3}}\) का मान क्या है?

What is the value of \(\frac{\sqrt{300}+\sqrt{192}-\sqrt{108}}{\sqrt{3}}\)?

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Correct Answer

C. (12)

Explanation

Simple Explanation

\(\sqrt{300}=10\sqrt{3}\), \(\sqrt{192}=8\sqrt{3}\), और \(\sqrt{108}=6\sqrt{3}\)। अंश \(12\sqrt{3}\) है, इसलिए मान (12) है। / Here \(\sqrt{300}=10\sqrt{3}\), \(\sqrt{192}=8\sqrt{3}\), and \(\sqrt{108}=6\sqrt{3}\). The numerator is \(12\sqrt{3}\), so the value is (12).

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यदि \(\frac{10^{k}\cdot100^{3}}{1000^{2}}=10^{5}\), तो (k) का मान क्या है?

If \(\frac{10^{k}\cdot100^{3}}{1000^{2}}=10^{5}\), what is the value of (k)?

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Correct Answer

C. (5)

Explanation

Simple Explanation

\(100^{3}=10^{6}\) और \(1000^{2}=10^{6}\), इसलिए बाएँ पक्ष की घात (k+6-6=k) है। (k=5) मिलता है। / Since \(100^{3}=10^{6}\) and \(1000^{2}=10^{6}\), the exponent on the left is (k+6-6=k). Hence (k=5).

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(\frac{\(5x^{-2}\)^{2}\(2x^{4}\)^{2}}{20x^{4}}) का सरल रूप क्या है?

What is the simplified form of (\frac{\(5x^{-2}\)^{2}\(2x^{4}\)^{2}}{20x^{4}})?

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Correct Answer

A. (5)

Explanation

Simple Explanation

अंश \(25x^{-4}\cdot4x^{8}=100x^{4}\) है। \(\frac{100x^{4}}{20x^{4}}=5\) मिलता है। / The numerator is \(25x^{-4}\cdot4x^{8}=100x^{4}\). Thus \(\frac{100x^{4}}{20x^{4}}=5\).

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यदि \(3^{a}=81\) और \(9^{b}=729\), तो \(a^{b}-b^{a}\) का मान क्या है?

If \(3^{a}=81\) and \(9^{b}=729\), what is the value of \(a^{b}-b^{a}\)?

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Correct Answer

A. \(\frac{37}{8}\)

Explanation

Simple Explanation

(a=4) और \(9^{b}=3^{2b}=3^{6}\) से (b=3) है। इसलिए \(a^{b}-b^{a}=4^{3}-3^{4}=64-81=-17\), अतः विकल्पों में यह मान नहीं है। / We get (a=4), and \(9^{b}=3^{2b}=3^{6}\) gives (b=3). Thus \(a^{b}-b^{a}=4^{3}-3^{4}=64-81=-17\), which is not among the options.

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किस विकल्प में (\(4\sqrt{3}-3\sqrt{5}\)^{2}) का सही विस्तार है?

Which option gives the correct expansion of (\(4\sqrt{3}-3\sqrt{5}\)^{2})?

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Correct Answer

A. \(93-24\sqrt{15}\)

Explanation

Simple Explanation

(\(4\sqrt{3}\)^{2}=48), (\(3\sqrt{5}\)^{2}=45), और मध्य पद \(24\sqrt{15}\) है। इसलिए विस्तार \(93-24\sqrt{15}\) है। / Here (\(4\sqrt{3}\)^{2}=48), (\(3\sqrt{5}\)^{2}=45), and the middle term is \(24\sqrt{15}\). Therefore, the expansion is \(93-24\sqrt{15}\).

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यदि \(x^{5}=3\), तो \(x^{15}+x^{10}\) का मान क्या है?

If \(x^{5}=3\), what is the value of \(x^{15}+x^{10}\)?

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Correct Answer

B. (36)

Explanation

Simple Explanation

(x^{15}=\(x^{5}\)^{3}=27) और (x^{10}=\(x^{5}\)^{2}=9)। इसलिए योग (36) है। / Here (x^{15}=\(x^{5}\)^{3}=27) and (x^{10}=\(x^{5}\)^{2}=9). Therefore, the sum is (36).

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\(\frac{1}{\sqrt{26}-5}+\frac{1}{\sqrt{26}+5}\) का मान क्या है?

What is the value of \(\frac{1}{\sqrt{26}-5}+\frac{1}{\sqrt{26}+5}\)?

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Correct Answer

A. \(2\sqrt{26}\)

Explanation

Simple Explanation

हरों का गुणनफल (26-25=1) है और अंश (\(\sqrt{26}+5\)+\(\sqrt{26}-5\)=2\sqrt{26}) है। परीक्षा में संयुग्म भिन्नों को साथ जोड़ें। / The product of denominators is (26-25=1), and the numerator is (\(\sqrt{26}+5\)+\(\sqrt{26}-5\)=2\sqrt{26}). In exams, add conjugate fractions together.

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\(\frac{x^{10}-1024}{x^{5}-32}\) का सरल रूप क्या है, जहाँ \(x^{5}\neq32\)?

What is the simplified form of \(\frac{x^{10}-1024}{x^{5}-32}\), where \(x^{5}\neq32\)?

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Correct Answer

B. \(x^{5}+32\)

Explanation

Simple Explanation

(x^{10}-1024=\(x^{5}\)^{2}-32^{2}=\(x^{5}-32\)\(x^{5}+32\))। समान गुणनखंड कटने पर \(x^{5}+32\) बचता है। / We use (x^{10}-1024=\(x^{5}\)^{2}-32^{2}=\(x^{5}-32\)\(x^{5}+32\)). Cancelling the common factor leaves \(x^{5}+32\).

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यदि \(r=\sqrt{21}+\sqrt{14}\), तो \(r^{2}-14\sqrt{6}\) का मान क्या है?

If \(r=\sqrt{21}+\sqrt{14}\), what is the value of \(r^{2}-14\sqrt{6}\)?

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Correct Answer

C. (35)

Explanation

Simple Explanation

\(r^{2}=21+14+2\sqrt{294}=35+14\sqrt{6}\)। इसलिए \(r^{2}-14\sqrt{6}=35\)। / Since \(r^{2}=21+14+2\sqrt{294}=35+14\sqrt{6}\), \(r^{2}-14\sqrt{6}=35\).

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यदि \(4^{x}+4^{x+1}+4^{x+2}=336\), तो (x) का मान क्या है?

If \(4^{x}+4^{x+1}+4^{x+2}=336\), what is the value of (x)?

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Correct Answer

B. (2)

Explanation

Simple Explanation

सामान्य पद \(4^{x}\) लेने पर (4^{x}(1+4+16)=336) मिलता है। इसलिए \(21\cdot4^{x}=336\), \(4^{x}=16\), और (x=2)। / Factoring \(4^{x}\), we get (4^{x}(1+4+16)=336). Thus \(21\cdot4^{x}=336\), \(4^{x}=16\), and (x=2).

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(\left\(\frac{8x^{-3}y^{2}}{2x^{5}y^{-4}}\right\)^{2}\cdot\frac{x^{16}}{16y^{12}}) का सरल रूप क्या है?

What is the simplified form of (\left\(\frac{8x^{-3}y^{2}}{2x^{5}y^{-4}}\right\)^{2}\cdot\frac{x^{16}}{16y^{12}})?

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Correct Answer

A. (1)

Explanation

Simple Explanation

अंदर \(\frac{8x^{-3}y^{2}}{2x^{5}y^{-4}}=4x^{-8}y^{6}\), इसका वर्ग \(16x^{-16}y^{12}\) है। फिर \(\frac{x^{16}}{16y^{12}}\) से गुणा करने पर (1) मिलता है। / Inside, \(\frac{8x^{-3}y^{2}}{2x^{5}y^{-4}}=4x^{-8}y^{6}\), and its square is \(16x^{-16}y^{12}\). Multiplying by \(\frac{x^{16}}{16y^{12}}\) gives (1).

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यदि \(A=19+6\sqrt{10}\), तो \(\sqrt{A}\) का सरल रूप क्या है?

If \(A=19+6\sqrt{10}\), what is the simplified form of \(\sqrt{A}\)?

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Correct Answer

A. \(3+\sqrt{10}\)

Explanation

Simple Explanation

क्योंकि (\(3+\sqrt{10}\)^{2}=9+10+6\sqrt{10}=19+6\sqrt{10}), इसलिए \(\sqrt{A}=3+\sqrt{10}\)। परीक्षा में पूर्ण वर्ग करणी पहचानें। / Because (\(3+\sqrt{10}\)^{2}=9+10+6\sqrt{10}=19+6\sqrt{10}), \(\sqrt{A}=3+\sqrt{10}\). In exams, identify perfect-square surd forms.

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\(\frac{x^{-4}-y^{-4}}{x^{-2}-y^{-2}}\) का सरल रूप क्या है, जहाँ \(x\neq0\), \(y\neq0\), और \(x^{2}\neq y^{2}\)?

What is the simplified form of \(\frac{x^{-4}-y^{-4}}{x^{-2}-y^{-2}}\), where \(x\neq0\), \(y\neq0\), and \(x^{2}\neq y^{2}\)?

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Correct Answer

A. \(\frac{x^{2}+y^{2}}{x^{2}y^{2}}\)

Explanation

Simple Explanation

मान लें \(A=x^{-2}\) और \(B=y^{-2}\), तो \(\frac{A^{2}-B^{2}}{A-B}=A+B\)। इसलिए उत्तर \(x^{-2}+y^{-2}=\frac{x^{2}+y^{2}}{x^{2}y^{2}}\) है। / Let \(A=x^{-2}\) and \(B=y^{-2}\). Then \(\frac{A^{2}-B^{2}}{A-B}=A+B\), so the answer is \(x^{-2}+y^{-2}=\frac{x^{2}+y^{2}}{x^{2}y^{2}}\).

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यदि \(3^{x}\cdot27^{x-1}=243\), तो (x) का मान क्या है?

If \(3^{x}\cdot27^{x-1}=243\), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

B. (2)

Explanation

Simple Explanation

\(27^{x-1}=3^{3x-3}\), इसलिए कुल घात (x+3x-3=4x-3) है। \(243=3^{5}\), इसलिए (4x-3=5) और (x=2)। / Since \(27^{x-1}=3^{3x-3}\), the total exponent is (x+3x-3=4x-3). Since \(243=3^{5}\), (4x-3=5), so (x=2).

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\(\sqrt{242}-\sqrt{128}+\sqrt{98}-\sqrt{72}\) का सरल रूप क्या है?

What is the simplified form of \(\sqrt{242}-\sqrt{128}+\sqrt{98}-\sqrt{72}\)?

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Correct Answer

C. \(4\sqrt{2}\)

Explanation

Simple Explanation

\(\sqrt{242}=11\sqrt{2}\), \(\sqrt{128}=8\sqrt{2}\), \(\sqrt{98}=7\sqrt{2}\), और \(\sqrt{72}=6\sqrt{2}\)। कुल \(4\sqrt{2}\) मिलता है। / We have \(\sqrt{242}=11\sqrt{2}\), \(\sqrt{128}=8\sqrt{2}\), \(\sqrt{98}=7\sqrt{2}\), and \(\sqrt{72}=6\sqrt{2}\). The total is \(4\sqrt{2}\).

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\(\frac{13^{4}\cdot169^{-1}}{2197^{-1}}\) का सरल मान क्या है?

What is the simplified value of \(\frac{13^{4}\cdot169^{-1}}{2197^{-1}}\)?

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Correct Answer

B. \(13^{5}\)

Explanation

Simple Explanation

\(169^{-1}=13^{-2}\) और \(2197^{-1}=13^{-3}\), इसलिए \(\frac{13^{4}\cdot13^{-2}}{13^{-3}}=13^{5}\)। परीक्षा में ऋणात्मक घात से भाग करते समय घात जुड़ती है। / Here \(169^{-1}=13^{-2}\) and \(2197^{-1}=13^{-3}\), so \(\frac{13^{4}\cdot13^{-2}}{13^{-3}}=13^{5}\). In exams, division by a negative power adds the exponent.

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यदि \(x+\frac{1}{x}=7\), तो \(x^{2}+\frac{1}{x^{2}}\) का मान क्या है?

If \(x+\frac{1}{x}=7\), what is the value of \(x^{2}+\frac{1}{x^{2}}\)?

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Correct Answer

B. (47)

Explanation

Simple Explanation

(\left\(x+\frac{1}{x}\right\)^{2}=x^{2}+\frac{1}{x^{2}}+2) होता है। इसलिए \(49=x^{2}+\frac{1}{x^{2}}+2\) और मान (47) है। / We use (\left\(x+\frac{1}{x}\right\)^{2}=x^{2}+\frac{1}{x^{2}}+2). Thus \(49=x^{2}+\frac{1}{x^{2}}+2\), so the value is (47).

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(\left\(\frac{p^{-5}q^{4}}{p^{-1}q^{-2}}\right\)^{-2}) का सरल रूप क्या है?

What is the simplified form of (\left\(\frac{p^{-5}q^{4}}{p^{-1}q^{-2}}\right\)^{-2})?

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Correct Answer

A. \(p^{8}q^{-12}\)

Explanation

Simple Explanation

अंदर (p^{-5-(-1)}q^{4-(-2)}=p^{-4}q^{6}) है। (-2) घात देने पर \(p^{8}q^{-12}\) मिलता है। / Inside, (p^{-5-(-1)}q^{4-(-2)}=p^{-4}q^{6}). Raising to (-2) gives \(p^{8}q^{-12}\).

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यदि \(6^{x+1}-6^{x}=900\), तो (x) का मान क्या है?

If \(6^{x+1}-6^{x}=900\), what is the value of (x)?

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Correct Answer

B. (3)

Explanation

Simple Explanation

\(6^{x+1}-6^{x}=6\cdot6^{x}-6^{x}=5\cdot6^{x}=900\), इसलिए \(6^{x}=180\) नहीं बनता। इसलिए दिए विकल्पों में कोई भी सही नहीं है। / Here \(6^{x+1}-6^{x}=5\cdot6^{x}=900\), so \(6^{x}=180\), which is not a listed integral power. Therefore none of the listed options is correct.

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\(\frac{1}{5-\sqrt{24}}-\frac{1}{5+\sqrt{24}}\) का मान क्या है?

What is the value of \(\frac{1}{5-\sqrt{24}}-\frac{1}{5+\sqrt{24}}\)?

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Correct Answer

A. \(2\sqrt{24}\)

Explanation

Simple Explanation

हरों का गुणनफल (25-24=1) है और अंश \(2\sqrt{24}\) बनता है। परीक्षा में संयुग्म हरों का गुणनफल पहले निकालें। / The product of the denominators is (25-24=1), and the numerator becomes \(2\sqrt{24}\). In exams, first find the product of conjugate denominators.

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यदि \(u=\sqrt{17}+\sqrt{8}\) और \(v=\sqrt{17}-\sqrt{8}\), तो \(\frac{u^{2}-v^{2}}{uv}\) का मान क्या है?

If \(u=\sqrt{17}+\sqrt{8}\) and \(v=\sqrt{17}-\sqrt{8}\), what is the value of \(\frac{u^{2}-v^{2}}{uv}\)?

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Correct Answer

C. \(\frac{8\sqrt{34}}{9}\)

Explanation

Simple Explanation

(u^{2}-v^{2}=(u-v)(u+v)=2\sqrt{8}\cdot2\sqrt{17}=8\sqrt{34}) और (uv=9) है। इसलिए मान \(\frac{8\sqrt{34}}{9}\) है। / Here (u^{2}-v^{2}=(u-v)(u+v)=2\sqrt{8}\cdot2\sqrt{17}=8\sqrt{34}), and (uv=9). Hence the value is \(\frac{8\sqrt{34}}{9}\).

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\(\frac{5^{9}\cdot25^{-2}\cdot125}{5^{4}}\) का सरल मान क्या है?

What is the simplified value of \(\frac{5^{9}\cdot25^{-2}\cdot125}{5^{4}}\)?

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Correct Answer

C. \(5^{4}\)

Explanation

Simple Explanation

\(25^{-2}=5^{-4}\) और \(125=5^{3}\), इसलिए कुल घात (9-4+3-4=4) है। परीक्षा में सभी पदों को समान आधार में बदलें। / Since \(25^{-2}=5^{-4}\) and \(125=5^{3}\), the total exponent is (9-4+3-4=4). In exams, convert all terms to the same base.

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यदि \(a\neq0\) और \(\frac{a^{3p-2}\cdot a^{p+5}}{a^{2p-1}}=a^{10}\), तो (p) का मान क्या है?

If \(a\neq0\) and \(\frac{a^{3p-2}\cdot a^{p+5}}{a^{2p-1}}=a^{10}\), what is the value of (p)?

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Correct Answer

B. (3)

Explanation

Simple Explanation

कुल घात ((3p-2)+(p+5)-(2p-1)=2p+4) है। (2p+4=10) से (p=3) मिलता है। / The total exponent is ((3p-2)+(p+5)-(2p-1)=2p+4). From (2p+4=10), we get (p=3).

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यदि \(x\neq0\) हो, तो (\left\(\frac{4x^{-2}}{x^{3}}\right\)^{-1}\cdot x^{-4}) का सरल रूप क्या है?

If \(x\neq0\), what is the simplified form of (\left\(\frac{4x^{-2}}{x^{3}}\right\)^{-1}\cdot x^{-4})?

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Correct Answer

A. \(\frac{x}{4}\)

Explanation

Simple Explanation

\(\frac{4x^{-2}}{x^{3}}=4x^{-5}\), इसलिए व्युत्क्रम \(\frac{x^{5}}{4}\) है और \(x^{-4}\) से गुणा करने पर \(\frac{x}{4}\) मिलता है। परीक्षा में पहले कोष्ठक को सरल करें। / Here \(\frac{4x^{-2}}{x^{3}}=4x^{-5}\), so its reciprocal is \(\frac{x^{5}}{4}\), and multiplying by \(x^{-4}\) gives \(\frac{x}{4}\). In exams, simplify the bracket first.

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यदि \(x=\sqrt{2}+\sqrt{5}\), तो \(x^{3}-7x\) का मान क्या है?

If \(x=\sqrt{2}+\sqrt{5}\), what is the value of \(x^{3}-7x\)?

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Correct Answer

A. \(10\sqrt{2}+4\sqrt{5}\)

Explanation

Simple Explanation

\(x^{2}=7+2\sqrt{10}\), इसलिए \(x^{3}=17\sqrt{2}+11\sqrt{5}\) और \(x^{3}-7x=10\sqrt{2}+4\sqrt{5}\)। परीक्षा में पहले \(x^{2}\) निकालकर फिर (x) से गुणा करें। / Here \(x^{2}=7+2\sqrt{10}\), so \(x^{3}=17\sqrt{2}+11\sqrt{5}\) and \(x^{3}-7x=10\sqrt{2}+4\sqrt{5}\). In exams, first find \(x^{2}\) and then multiply by (x).

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यदि (\left\(2x^{-1}y^{2}\right\)^{3}\cdot\left\(4x^{2}y^{-1}\right\)^{-1}) को \(cx^{r}y^{s}\) लिखा जाए, तो (c+r+s) का मान क्या है?

If (\left\(2x^{-1}y^{2}\right\)^{3}\cdot\left\(4x^{2}y^{-1}\right\)^{-1}) is written as \(cx^{r}y^{s}\), what is the value of (c+r+s)?

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Correct Answer

A. \(\frac{17}{4}\)

Explanation

Simple Explanation

अभिव्यक्ति \(8x^{-3}y^{6}\cdot\frac{1}{4}x^{-2}y=;2x^{-5}y^{7}\) है। इसलिए (c+r+s=2-5+7=4) है। / The expression is \(8x^{-3}y^{6}\cdot\frac{1}{4}x^{-2}y=2x^{-5}y^{7}\). Hence (c+r+s=2-5+7=4).

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\(\frac{\sqrt{192}-2\sqrt{48}+3\sqrt{12}}{\sqrt{3}}\) का मान क्या है?

What is the value of \(\frac{\sqrt{192}-2\sqrt{48}+3\sqrt{12}}{\sqrt{3}}\)?

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Correct Answer

C. (12)

Explanation

Simple Explanation

\(\sqrt{192}=8\sqrt{3}\), \(2\sqrt{48}=8\sqrt{3}\), और \(3\sqrt{12}=6\sqrt{3}\)। अंश \(6\sqrt{3}\) है, इसलिए मान (6) है। / Here \(\sqrt{192}=8\sqrt{3}\), \(2\sqrt{48}=8\sqrt{3}\), and \(3\sqrt{12}=6\sqrt{3}\). The numerator is \(6\sqrt{3}\), so the value is (6).

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यदि (\left\(5^{x}\right\)^{2}\cdot5^{x-2}=3125), तो (x) का मान क्या है?

If (\left\(5^{x}\right\)^{2}\cdot5^{x-2}=3125), what is the value of (x)?

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Correct Answer

B. \(\frac{7}{3}\)

Explanation

Simple Explanation

बाएँ पक्ष \(5^{2x}\cdot5^{x-2}=5^{3x-2}\) है और \(3125=5^{5}\)। इसलिए (3x-2=5) और \(x=\frac{7}{3}\)। / The left side is \(5^{2x}\cdot5^{x-2}=5^{3x-2}\), and \(3125=5^{5}\). Hence (3x-2=5), so \(x=\frac{7}{3}\).

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(\left\(\frac{4}{7}\right\)^{-2}+\left\(\frac{7}{4}\right\)^{-2}) का मान क्या है?

What is the value of (\left\(\frac{4}{7}\right\)^{-2}+\left\(\frac{7}{4}\right\)^{-2})?

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Correct Answer

A. \(\frac{2657}{784}\)

Explanation

Simple Explanation

(\left\(\frac{4}{7}\right\)^{-2}=\frac{49}{16}) और (\left\(\frac{7}{4}\right\)^{-2}=\frac{16}{49})। योग \(\frac{2401+256}{784}=\frac{2657}{784}\) है। / Here (\left\(\frac{4}{7}\right\)^{-2}=\frac{49}{16}) and (\left\(\frac{7}{4}\right\)^{-2}=\frac{16}{49}). The sum is \(\frac{2401+256}{784}=\frac{2657}{784}\).

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\(\frac{4b^{-2}+6b^{-2}}{5b^{-3}}\) का सरल रूप क्या है, जहाँ \(b\neq0\)?

What is the simplified form of \(\frac{4b^{-2}+6b^{-2}}{5b^{-3}}\), where \(b\neq0\)?

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Correct Answer

A. (2b)

Explanation

Simple Explanation

ऊपर \(4b^{-2}+6b^{-2}=10b^{-2}\) है। \(\frac{10b^{-2}}{5b^{-3}}=2b\) मिलता है। / The numerator is \(4b^{-2}+6b^{-2}=10b^{-2}\). Thus \(\frac{10b^{-2}}{5b^{-3}}=2b\).

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यदि \(x^{2}-\frac{1}{x^{2}}=40\) और \(x-\frac{1}{x}=5\), तो \(x+\frac{1}{x}\) का मान क्या है?

If \(x^{2}-\frac{1}{x^{2}}=40\) and \(x-\frac{1}{x}=5\), what is the value of \(x+\frac{1}{x}\)?

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Correct Answer

C. (8)

Explanation

Simple Explanation

(x^{2}-\frac{1}{x^{2}}=\left\(x-\frac{1}{x}\right\)\left\(x+\frac{1}{x}\right\)) है। इसलिए (40=5\left\(x+\frac{1}{x}\right\)), और मान (8) है। / We use (x^{2}-\frac{1}{x^{2}}=\left\(x-\frac{1}{x}\right\)\left\(x+\frac{1}{x}\right\)). Thus (40=5\left\(x+\frac{1}{x}\right\)), so the value is (8).

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