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20 results found for "factor form" in Class 10.

Question Hard Mathematics Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

दो संख्याएँ (180) और (252) हैं। इनके महत्तम समापवर्तक को अभाज्य गुणनखंड रूप में लिखने पर क्या मिलेगा?

Two numbers are (180) and (252). What is their HCF in prime factor form?

Explanation opens after your attempt
Correct Answer

A. \(2^2\times3^2\)

Step 1

Concept

Write both numbers in prime factor form.

Step 2

Why this answer is correct

\(180=2^2\times3^2\times5\) and \(252=2^2\times3^2\times7\), so the common smaller powers give \(2^2\times3^2\).

Step 3

Exam Tip

Do not include non-common factors like (5) or (7) in HCF. चरण 1: पहले दोनों संख्याओं को अभाज्य गुणनखंडों में लिखें। चरण 2: \(180=2^2\times3^2\times5\) और \(252=2^2\times3^2\times7\), इसलिए समान छोटी घातें \(2^2\times3^2\) हैं। चरण 3: महत्तम समापवर्तक में (5) या (7) जैसे असमान गुणनखंड न लें।

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Question Expert Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 23

यदि (p(x)=-(x-11)(x+13)) है, तो (x<-13) के लिए ग्राफ (x)-अक्ष के किस ओर होगा?

If (p(x)=-(x-11)(x+13)), on which side of the (x)-axis will the graph lie for (x<-13)?

Explanation opens after your attempt
Correct Answer

B. नीचेBelow

Step 1

Concept

For (x<-13), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 2

Why this answer is correct

The correct answer is B. नीचे / Below. For (x<-13), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 3

Exam Tip

(x<-13) पर दोनों कारक ऋणात्मक हैं और बाहर का ऋण चिन्ह मान को ऋणात्मक बनाता है। टिप: पहले कारकों का चिह्न देखें।

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Question Expert Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 23

यदि (p(x)=(x+9)(x-5)(x-12)) है, तो (5<x<12) में (p(x)) का चिह्न क्या होगा?

If (p(x)=(x+9)(x-5)(x-12)), what will be the sign of (p(x)) for (5<x<12)?

Explanation opens after your attempt
Correct Answer

B. ऋणात्मकNegative

Step 1

Concept

In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check the sign of each factor separately.

Step 2

Why this answer is correct

The correct answer is B. ऋणात्मक / Negative. In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check the sign of each factor separately.

Step 3

Exam Tip

इस अंतराल में पहले दो कारक धनात्मक और तीसरा ऋणात्मक है, इसलिए गुणनफल ऋणात्मक है। टिप: प्रत्येक कारक का चिह्न अलग जांचें।

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Question Expert Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 22

यदि (p(x)=-(x-9)(x+11)) है, तो (x<-11) के लिए ग्राफ (x)-अक्ष के किस ओर होगा?

If (p(x)=-(x-9)(x+11)), on which side of the (x)-axis will the graph lie for (x<-11)?

Explanation opens after your attempt
Correct Answer

B. नीचेBelow

Step 1

Concept

For (x<-11), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 2

Why this answer is correct

The correct answer is B. नीचे / Below. For (x<-11), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 3

Exam Tip

(x<-11) पर दोनों कारक ऋणात्मक हैं और बाहर का ऋण चिन्ह मान को ऋणात्मक बनाता है। टिप: पहले कारकों का चिह्न देखें।

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Question Expert Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 22

यदि (p(x)=(x+6)(x-4)(x-10)) है, तो (4<x<10) में (p(x)) का चिह्न क्या होगा?

If (p(x)=(x+6)(x-4)(x-10)), what will be the sign of (p(x)) for (4<x<10)?

Explanation opens after your attempt
Correct Answer

B. ऋणात्मकNegative

Step 1

Concept

In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check the sign of each factor separately.

Step 2

Why this answer is correct

The correct answer is B. ऋणात्मक / Negative. In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check the sign of each factor separately.

Step 3

Exam Tip

इस अंतराल में पहले दो कारक धनात्मक और तीसरा ऋणात्मक है, इसलिए गुणनफल ऋणात्मक है। टिप: प्रत्येक कारक का चिह्न अलग जांचें।

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Question Hard Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 24

यदि (p(x)=-(x-7)(x+9)) है तो (x<-9) के लिए ग्राफ (x)-अक्ष के किस ओर होगा?

If (p(x)=-(x-7)(x+9)), on which side of the (x)-axis will the graph lie for (x<-9)?

Explanation opens after your attempt
Correct Answer

B. नीचेBelow

Step 1

Concept

For (x<-9), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 2

Why this answer is correct

The correct answer is B. नीचे / Below. For (x<-9), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 3

Exam Tip

(x<-9) पर दोनों कारक ऋणात्मक हैं और बाहर का ऋण चिन्ह मान को ऋणात्मक बनाता है। टिप: पहले कारकों का चिह्न देखें।

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Question Hard Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 24

यदि (p(x)=(x+5)(x-3)(x-9)) है तो (3<x<9) में (p(x)) का चिह्न क्या होगा?

If (p(x)=(x+5)(x-3)(x-9)), what will be the sign of (p(x)) for (3<x<9)?

Explanation opens after your attempt
Correct Answer

B. ऋणात्मकNegative

Step 1

Concept

In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check factor signs separately.

Step 2

Why this answer is correct

The correct answer is B. ऋणात्मक / Negative. In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check factor signs separately.

Step 3

Exam Tip

इस अंतराल में पहले दो कारक धनात्मक और तीसरा ऋणात्मक है इसलिए गुणनफल ऋणात्मक है। टिप: कारकों के चिह्न अलग-अलग जांचें।

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Question Hard Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 23

यदि (p(x)=-(x-4)(x+8)) है, तो (x<-8) के लिए ग्राफ (x)-अक्ष के किस ओर होगा?

If (p(x)=-(x-4)(x+8)), on which side of the (x)-axis will the graph lie for (x<-8)?

Explanation opens after your attempt
Correct Answer

B. नीचेBelow

Step 1

Concept

For (x<-8), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 2

Why this answer is correct

The correct answer is B. नीचे / Below. For (x<-8), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 3

Exam Tip

(x<-8) पर दोनों कारक ऋणात्मक हैं और बाहर का ऋण चिन्ह मान को ऋणात्मक बनाता है। टिप: पहले कारकों का चिह्न देखें।

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Question Hard Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 23

यदि (p(x)=(x+4)(x-2)(x-7)) है, तो (2<x<7) में (p(x)) का चिह्न क्या होगा?

If (p(x)=(x+4)(x-2)(x-7)), what will be the sign of (p(x)) for (2<x<7)?

Explanation opens after your attempt
Correct Answer

B. ऋणात्मकNegative

Step 1

Concept

In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check factor signs separately.

Step 2

Why this answer is correct

The correct answer is B. ऋणात्मक / Negative. In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check factor signs separately.

Step 3

Exam Tip

इस अंतराल में पहले दो कारक धनात्मक और तीसरा ऋणात्मक है, इसलिए गुणनफल ऋणात्मक है। टिप: कारकों के चिह्न अलग-अलग जाँचें।

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Question Hard Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 22

यदि (p(x)=-(x-2)(x+6)) है, तो (x<-6) के लिए ग्राफ (x)-अक्ष के किस ओर होगा?

If (p(x)=-(x-2)(x+6)), on which side of the (x)-axis will the graph lie for (x<-6)?

Explanation opens after your attempt
Correct Answer

B. नीचेBelow

Step 1

Concept

For (x<-6), both factors are negative and the outside negative makes the value negative. Tip: first check factor signs and then apply the outside sign.

Step 2

Why this answer is correct

The correct answer is B. नीचे / Below. For (x<-6), both factors are negative and the outside negative makes the value negative. Tip: first check factor signs and then apply the outside sign.

Step 3

Exam Tip

(x<-6) पर दोनों कारक ऋणात्मक हैं और बाहर का ऋण चिन्ह मान को ऋणात्मक बनाता है। टिप: पहले कारकों का चिह्न देखें फिर बाहरी चिन्ह लगाएं।

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Question Hard Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 22

यदि (p(x)=(x+2)(x-1)(x-6)) है, तो (1<x<6) में (p(x)) का चिह्न क्या होगा?

If (p(x)=(x+2)(x-1)(x-6)), what will be the sign of (p(x)) for (1<x<6)?

Explanation opens after your attempt
Correct Answer

B. ऋणात्मकNegative

Step 1

Concept

In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check the sign of each factor separately.

Step 2

Why this answer is correct

The correct answer is B. ऋणात्मक / Negative. In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check the sign of each factor separately.

Step 3

Exam Tip

इस अंतराल में पहले दो कारक धनात्मक और तीसरा ऋणात्मक है, इसलिए गुणनफल ऋणात्मक है। टिप: प्रत्येक कारक का चिह्न अलग जांचें।

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Question Hard Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 22

यदि (p(x)=x-2-(a+b)x+ab) है, तो ग्राफ के (x)-अक्ष कटान कौन से होंगे?

If (p(x)=x-2-(a+b)x+ab), what will be the (x)-axis intersections of the graph?

Explanation opens after your attempt
Correct Answer

A. ((a,0)) और ((b,0))((a,0)) and ((b,0))

Step 1

Concept

The polynomial equals ((x-a)(x-b)), so the zeroes are (a) and (b). Tip: connect factor form with graph intersections.

Step 2

Why this answer is correct

The correct answer is A. ((a,0)) और ((b,0)) / ((a,0)) and ((b,0)). The polynomial equals ((x-a)(x-b)), so the zeroes are (a) and (b). Tip: connect factor form with graph intersections.

Step 3

Exam Tip

बहुपद ((x-a)(x-b)) के बराबर है, इसलिए शून्यक (a) और (b) हैं। टिप: गुणनखंड रूप को ग्राफ कटान से जोड़ें।

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Question Medium Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 24

यदि (p(x)=(x+2)(x-7)) है तो ग्राफ (x)-अक्ष से किन बिंदुओं पर मिलेगा?

If (p(x)=(x+2)(x-7)), at which points will the graph meet the (x)-axis?

Explanation opens after your attempt
Correct Answer

B. ((-2,0)) और ((7,0))((-2,0)) and ((7,0))

Step 1

Concept

Setting the factors to zero gives (x=-2) and (x=7). Tip: convert each zero into the point ((x,0)).

Step 2

Why this answer is correct

The correct answer is B. ((-2,0)) और ((7,0)) / ((-2,0)) and ((7,0)). Setting the factors to zero gives (x=-2) and (x=7). Tip: convert each zero into the point ((x,0)).

Step 3

Exam Tip

कारक शून्य करने पर (x=-2) और (x=7) मिलते हैं। टिप: शून्यक को ((x,0)) बिंदु में बदलें।

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Question Medium Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 23

यदि (p(x)=(x-1)(x-4)(x+2)) है तो ग्राफ (x)-अक्ष को कितने अलग बिंदुओं पर काटेगा?

If (p(x)=(x-1)(x-4)(x+2)), at how many distinct points will the graph cut the (x)-axis?

Explanation opens after your attempt
Correct Answer

C. तीनThree

Step 1

Concept

The three different factors give three distinct zeroes (1), (4), (-2). Tip: each linear factor gives a possible intersection.

Step 2

Why this answer is correct

The correct answer is C. तीन / Three. The three different factors give three distinct zeroes (1), (4), (-2). Tip: each linear factor gives a possible intersection.

Step 3

Exam Tip

तीन अलग कारक तीन अलग शून्यक (1), (4), (-2) देते हैं। टिप: हर रैखिक कारक एक संभावित कटान देता है।

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Question Medium Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 23

यदि (p(x)=(x+7)(x-1)) है तो आलेख (x)-अक्ष को किन बिंदुओं पर मिलेगा?

If (p(x)=(x+7)(x-1)), at which points will the graph meet the (x)-axis?

Explanation opens after your attempt
Correct Answer

C. ((-7,0)) और ((1,0))((-7,0)) and ((1,0))

Step 1

Concept

Setting the factors equal to zero gives (x=-7) and (x=1). Tip: set each factor separately to (0).

Step 2

Why this answer is correct

The correct answer is C. ((-7,0)) और ((1,0)) / ((-7,0)) and ((1,0)). Setting the factors equal to zero gives (x=-7) and (x=1). Tip: set each factor separately to (0).

Step 3

Exam Tip

कारक शून्य करने पर (x=-7) और (x=1) मिलते हैं। टिप: हर कारक को अलग से (0) रखें।

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Question Medium Mathematics Polynomials Geometrical meaning of the zeroes of a polynomial. Class 10 Level 22

बहुपद (p(x)=(x-4)(x+2)) के आलेख के (x)-अक्ष कटान कौन से होंगे?

What will be the (x)-axis intersections of the graph of (p(x)=(x-4)(x+2))?

Explanation opens after your attempt
Correct Answer

A. ((4,0)) और ((-2,0))((4,0)) and ((-2,0))

Step 1

Concept

Setting the factors to zero gives (x=4) and (x=-2). Tip: convert each zero into the point ((x,0)).

Step 2

Why this answer is correct

The correct answer is A. ((4,0)) और ((-2,0)) / ((4,0)) and ((-2,0)). Setting the factors to zero gives (x=4) and (x=-2). Tip: convert each zero into the point ((x,0)).

Step 3

Exam Tip

कारकों को शून्य करने पर (x=4) और (x=-2) मिलते हैं। टिप: शून्यक को ((x,0)) बिंदु में बदलें।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

(0.0075) को सरलतम भिन्न में लिखने पर हर का अभाज्य गुणनखंडन क्या होगा?

When (0.0075) is written as a fraction in lowest form, what is the prime factorisation of the denominator?

Explanation opens after your attempt
Correct Answer

B. \(2^3\cdot 5\)

Step 1

Concept

\(0.0075=\frac{75}{10000}\).

Step 2

Why this answer is correct

Reducing gives \(\frac{3}{400}\), and \(400=2^4\cdot 5^2\). This factorisation is not present in the listed choices, so the options have an error.

Step 3

Exam Tip

Do not choose an option before writing the final denominator in prime factor form. चरण 1: \(0.0075=\frac{75}{10000}\) है। चरण 2: सरल करने पर \(\frac{3}{400}\) मिलता है और \(400=2^4\cdot 5^2\)। यहाँ दिए विकल्पों में यह नहीं है, इसलिए सही विकल्पों की जाँच में त्रुटि दिखती है। चरण 3: अंतिम हर को अभाज्य रूप में लिखे बिना विकल्प न चुनें।

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Question Hard Mathematics Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 12

\(यदि (a=2^3\times3^4\times7) और (b=2^5\times3^2\times5\times7^2), तो (\frac{\)लघुत्तम समापवर्त्य}{महत्तम समापवर्तक}) क्या होगा?

\(If (a=2^3\times3^4\times7) and (b=2^5\times3^2\times5\times7^2), what is (\frac{\)LCM}{HCF})?

Explanation opens after your attempt
Correct Answer

A. \(2^2\times3^2\times5\times7\)

Step 1

Concept

HCF is \(2^3\times3^2\times7\), and LCM is \(2^5\times3^4\times5\times7^2\).

Step 2

Why this answer is correct

On division, subtract powers to get \(2^2\times3^2\times5\times7\).

Step 3

Exam Tip

Prime factor form is the fastest method for ratio questions. चरण 1: महत्तम समापवर्तक \(2^3\times3^2\times7\) और लघुत्तम समापवर्त्य \(2^5\times3^4\times5\times7^2\) है। चरण 2: भाग देने पर घातें घटती हैं, इसलिए अनुपात \(2^2\times3^2\times5\times7\) है। चरण 3: अभाज्य रूप में अनुपात निकालना सबसे तेज होता है।

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Question Hard Mathematics Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 11

\(यदि (p=2^4\times3^3\times5) और (q=2^2\times3\times5^2\times11), तो (\frac{\)लघुत्तम समापवर्त्य}{महत्तम समापवर्तक}) क्या होगा?

\(If (p=2^4\times3^3\times5) and (q=2^2\times3\times5^2\times11), what is (\frac{\)LCM}{HCF})?

Explanation opens after your attempt
Correct Answer

A. \(2^2\times3^2\times5\times11\)

Step 1

Concept

HCF is \(2^2\times3\times5\), and LCM is \(2^4\times3^3\times5^2\times11\).

Step 2

Why this answer is correct

On division, subtract powers, giving \(2^2\times3^2\times5\times11\).

Step 3

Exam Tip

Prime factor form makes ratio questions faster. चरण 1: महत्तम समापवर्तक \(2^2\times3\times5\) और लघुत्तम समापवर्त्य \(2^4\times3^3\times5^2\times11\) होगा। चरण 2: भाग देने पर घातें घटती हैं, इसलिए अनुपात \(2^2\times3^2\times5\times11\) है। चरण 3: अभाज्य रूप में अनुपात निकालना तेज और सुरक्षित तरीका है।

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Question Hard Mathematics Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

\(यदि (a=2^5\times3^2\times11) और (b=2^3\times3^4\times5), तो (\frac{\)लघुत्तम समापवर्त्य}{महत्तम समापवर्तक}) का मान क्या होगा?

\(If (a=2^5\times3^2\times11) and (b=2^3\times3^4\times5), what is the value of (\frac{\)LCM}{HCF})?

Explanation opens after your attempt
Correct Answer

A. \(2^2\times3^2\times5\times11\)

Step 1

Concept

HCF takes the smaller powers \(2^3\) and \(3^2\).

Step 2

Why this answer is correct

LCM takes \(2^5\), \(3^4\), (5), and (11), so the ratio becomes \(2^2\times3^2\times5\times11\).

Step 3

Exam Tip

Subtract powers when dividing prime factor forms. चरण 1: महत्तम समापवर्तक में छोटी घातें \(2^3\) और \(3^2\) आएँगी। चरण 2: लघुत्तम समापवर्त्य में \(2^5\), \(3^4\), (5), (11) आएँगे, इसलिए अनुपात \(2^2\times3^2\times5\times11\) होगा। चरण 3: अनुपात में समान घातें घटाकर उत्तर जल्दी निकालें।

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