Concept-wise Practice

subtraction MCQ Questions for Class 10

subtraction se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

51 questions tagged with subtraction.

कौन सा विकल्प \(4\sqrt{7}-\sqrt{112}\) का मान है?

Which option is the value of \(4\sqrt{7}-\sqrt{112}\)?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

\(\sqrt{112}=\sqrt{16\times7}=4\sqrt{7}\). Therefore \(4\sqrt{7}-4\sqrt{7}=0\).

Step 2

Why this answer is correct

The correct answer is A. (0). \(\sqrt{112}=\sqrt{16\times7}=4\sqrt{7}\). Therefore \(4\sqrt{7}-4\sqrt{7}=0\).

Step 3

Exam Tip

\(\sqrt{112}=\sqrt{16\times7}=4\sqrt{7}\) है। इसलिए \(4\sqrt{7}-4\sqrt{7}=0\) है।

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कौन सा विकल्प \(\sqrt{192}-\sqrt{27}\) का सरल रूप है?

Which option is the simplified form of \(\sqrt{192}-\sqrt{27}\)?

Explanation opens after your attempt
Correct Answer

A. \(5\sqrt{3}\)

Step 1

Concept

\(\sqrt{192}=8\sqrt{3}\) and \(\sqrt{27}=3\sqrt{3}\). The difference is \(5\sqrt{3}\).

Step 2

Why this answer is correct

The correct answer is A. \(5\sqrt{3}\). \(\sqrt{192}=8\sqrt{3}\) and \(\sqrt{27}=3\sqrt{3}\). The difference is \(5\sqrt{3}\).

Step 3

Exam Tip

\(\sqrt{192}=8\sqrt{3}\) और \(\sqrt{27}=3\sqrt{3}\) है। अंतर \(5\sqrt{3}\) है।

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कौन सा विकल्प \(7-\sqrt{19}\) के बारे में सही है?

Which option is correct about \(7-\sqrt{19}\)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय हैIt is irrational

Step 1

Concept

\(\sqrt{19}\) is irrational because (19) is not a perfect square. Subtracting an irrational from a rational gives an irrational result.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय है / It is irrational. \(\sqrt{19}\) is irrational because (19) is not a perfect square. Subtracting an irrational from a rational gives an irrational result.

Step 3

Exam Tip

\(\sqrt{19}\) अपरिमेय है क्योंकि (19) पूर्ण वर्ग नहीं है। परिमेय से अपरिमेय घटाने पर परिणाम अपरिमेय होता है।

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यदि \(x=4+\sqrt{7}\) और \(y=4-\sqrt{7}\) हैं तो (x-y) का सरल रूप क्या है?

If \(x=4+\sqrt{7}\) and \(y=4-\sqrt{7}\), what is the simplified form of (x-y)?

Explanation opens after your attempt
Correct Answer

A. \(2\sqrt{7}\)

Step 1

Concept

On subtracting, the (4) terms cancel and (\sqrt{7}-\(-\sqrt{7}\)=2\sqrt{7}). Watch the signs carefully.

Step 2

Why this answer is correct

The correct answer is A. \(2\sqrt{7}\). On subtracting, the (4) terms cancel and (\sqrt{7}-\(-\sqrt{7}\)=2\sqrt{7}). Watch the signs carefully.

Step 3

Exam Tip

घटाने पर (4) पद कट जाते हैं और (\sqrt{7}-\(-\sqrt{7}\)=2\sqrt{7}) मिलता है। चिह्नों का ध्यान रखें।

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कौन सा विकल्प \(4\sqrt{3}-\sqrt{27}\) का मान है?

Which option is the value of \(4\sqrt{3}-\sqrt{27}\)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{3}\)

Step 1

Concept

\(\sqrt{27}=3\sqrt{3}\). Hence \(4\sqrt{3}-3\sqrt{3}=\sqrt{3}\).

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{3}\). \(\sqrt{27}=3\sqrt{3}\). Hence \(4\sqrt{3}-3\sqrt{3}=\sqrt{3}\).

Step 3

Exam Tip

\(\sqrt{27}=3\sqrt{3}\) है। इसलिए \(4\sqrt{3}-3\sqrt{3}=\sqrt{3}\) होगा।

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कौन सा विकल्प \(\sqrt{75}-\sqrt{27}\) का सही मान है?

Which option is the correct value of \(\sqrt{75}-\sqrt{27}\)?

Explanation opens after your attempt
Correct Answer

A. \(2\sqrt{3}\)

Step 1

Concept

\(\sqrt{75}=5\sqrt{3}\) and \(\sqrt{27}=3\sqrt{3}\). The difference is \(2\sqrt{3}\).

Step 2

Why this answer is correct

The correct answer is A. \(2\sqrt{3}\). \(\sqrt{75}=5\sqrt{3}\) and \(\sqrt{27}=3\sqrt{3}\). The difference is \(2\sqrt{3}\).

Step 3

Exam Tip

\(\sqrt{75}=5\sqrt{3}\) और \(\sqrt{27}=3\sqrt{3}\) है। अंतर \(2\sqrt{3}\) मिलेगा।

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(\(5+\sqrt{7}\)-\(2+\sqrt{7}\)) का मान किस प्रकार की संख्या है?

What type of number is the value of (\(5+\sqrt{7}\)-\(2+\sqrt{7}\))?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

On subtracting the \(\sqrt{7}\) terms cancel and the value is (3). So the result is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. On subtracting the \(\sqrt{7}\) terms cancel and the value is (3). So the result is rational.

Step 3

Exam Tip

घटाने पर \(\sqrt{7}\) पद कट जाते हैं और मान (3) मिलता है। इसलिए परिणाम परिमेय है।

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कौन सा विकल्प \(3-\sqrt{11}\) के बारे में सही है?

Which option is correct about \(3-\sqrt{11}\)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय संख्या हैIt is an irrational number

Step 1

Concept

(3) is rational and \(\sqrt{11}\) is irrational. Their difference is irrational.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय संख्या है / It is an irrational number. (3) is rational and \(\sqrt{11}\) is irrational. Their difference is irrational.

Step 3

Exam Tip

(3) परिमेय है और \(\sqrt{11}\) अपरिमेय है। उनका अंतर अपरिमेय होता है।

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यदि (a) परिमेय संख्या है और (b) अपरिमेय संख्या है तो (a-b) किस प्रकार की संख्या होगी?

If (a) is rational and (b) is irrational then what type of number is (a-b)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

The difference of a rational and an irrational number is irrational. This property helps identify mixed expressions.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. The difference of a rational and an irrational number is irrational. This property helps identify mixed expressions.

Step 3

Exam Tip

परिमेय और अपरिमेय का अंतर अपरिमेय होता है। यह गुण गैर मिश्रित संख्याओं को पहचानने में मदद करता है।

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\(\sqrt{98}-\sqrt{50}\) का मान क्या है?

What is the value of \(\sqrt{98}-\sqrt{50}\)?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

\(\sqrt{98}=7\sqrt{2}\) and \(\sqrt{50}=5\sqrt{2}\). Their difference is \(2\sqrt{2}\).

Step 2

Why this answer is correct

The correct answer is A. \(2\sqrt{2}\). \(\sqrt{98}=7\sqrt{2}\) and \(\sqrt{50}=5\sqrt{2}\). Their difference is \(2\sqrt{2}\).

Step 3

Exam Tip

\(\sqrt{98}=7\sqrt{2}\) और \(\sqrt{50}=5\sqrt{2}\) है। अंतर \(2\sqrt{2}\) होगा।

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\(\sqrt{45}-\sqrt{20}\) का मान क्या है?

What is the value of \(\sqrt{45}-\sqrt{20}\)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{5}\)

Step 1

Concept

\(\sqrt{45}=3\sqrt{5}\) and \(\sqrt{20}=2\sqrt{5}\). The difference is \(\sqrt{5}\).

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{5}\). \(\sqrt{45}=3\sqrt{5}\) and \(\sqrt{20}=2\sqrt{5}\). The difference is \(\sqrt{5}\).

Step 3

Exam Tip

\(\sqrt{45}=3\sqrt{5}\) और \(\sqrt{20}=2\sqrt{5}\) है। अंतर \(\sqrt{5}\) है।

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\(10-\sqrt{6}\) किस प्रकार की संख्या है?

What type of number is \(10-\sqrt{6}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

Subtracting an irrational number from a rational number gives an irrational result. \(\sqrt{6}\) is irrational because (6) is not a perfect square.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. Subtracting an irrational number from a rational number gives an irrational result. \(\sqrt{6}\) is irrational because (6) is not a perfect square.

Step 3

Exam Tip

परिमेय से अपरिमेय घटाने पर परिणाम अपरिमेय होता है। \(\sqrt{6}\) अपरिमेय है क्योंकि (6) पूर्ण वर्ग नहीं है।

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\(7-\sqrt{2}\) किस प्रकार की संख्या है?

What type of number is \(7-\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

Subtracting irrational \(\sqrt{2}\) from rational (7) gives an irrational number. Changing the sign does not change this property.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. Subtracting irrational \(\sqrt{2}\) from rational (7) gives an irrational number. Changing the sign does not change this property.

Step 3

Exam Tip

परिमेय (7) से अपरिमेय \(\sqrt{2}\) घटाने पर परिणाम अपरिमेय होता है। संकेत बदलने से गुण नहीं बदलता।

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कौन सा विकल्प \(\sqrt{18}-\sqrt{8}\) का सही प्रकार बताता है?

Which option correctly describes \(\sqrt{18}-\sqrt{8}\)?

Explanation opens after your attempt
Correct Answer

B. अपरिमेय क्योंकि उत्तर \(\sqrt{2}\) हैIrrational because the answer is \(\sqrt{2}\)

Step 1

Concept

\(\sqrt{18}=3\sqrt{2}\) and \(\sqrt{8}=2\sqrt{2}\).

Step 2

Why this answer is correct

The difference is \(\sqrt{2}\) which is irrational.

Step 3

Exam Tip

Do not subtract the numbers inside square roots directly. चरण 1: \(\sqrt{18}=3\sqrt{2}\) और \(\sqrt{8}=2\sqrt{2}\)। चरण 2: अंतर \(\sqrt{2}\) है जो अपरिमेय है। चरण 3: वर्गमूल घटाते समय भीतर की संख्याओं को सीधे न घटाएं।

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यदि (p=23q+19), तो (7p-18) को 23 से भाग देने पर शेषफल क्या होगा?

If (p=23q+19), what is the remainder when (7p-18) is divided by 23?

Explanation opens after your attempt
Correct Answer

A. 0

Step 1

Concept

The remainder of (p) is 19.

Step 2

Why this answer is correct

The remainder of (7p-18) comes from \(7\times19-18=115\).

Step 3

Exam Tip

Since \(115=23\times5\), the final remainder is 0. चरण 1: (p) का शेषफल 19 है। चरण 2: (7p-18) का शेषफल \(7\times19-18=115\) से मिलेगा। चरण 3: \(115=23\times5\), इसलिए अंतिम शेषफल 0 है।

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यदि (p=19q+16), तो (6p-20) को 19 से भाग देने पर शेषफल क्या होगा?

If (p=19q+16), what is the remainder when (6p-20) is divided by 19?

Explanation opens after your attempt
Correct Answer

A. 0

Step 1

Concept

The remainder of (p) is 16.

Step 2

Why this answer is correct

The remainder of (6p-20) comes from \(6\times16-20=76\).

Step 3

Exam Tip

Since \(76=19\times4\), the final remainder is 0. चरण 1: (p) का शेषफल 16 है। चरण 2: (6p-20) का शेषफल \(6\times16-20=76\) से मिलेगा। चरण 3: \(76=19\times4\), इसलिए अंतिम शेषफल 0 है।

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यदि (p=17q+14), तो (5p-19) को 17 से भाग देने पर शेषफल क्या होगा?

If (p=17q+14), what is the remainder when (5p-19) is divided by 17?

Explanation opens after your attempt
Correct Answer

A. 0

Step 1

Concept

The remainder of (p) is 14.

Step 2

Why this answer is correct

The remainder of (5p-19) comes from \(5\times14-19=51\).

Step 3

Exam Tip

Since \(51=17\times3\), the final remainder is 0. चरण 1: (p) का शेषफल 14 है। चरण 2: (5p-19) का शेषफल \(5\times14-19=51\) से मिलेगा। चरण 3: \(51=17\times3\), इसलिए अंतिम शेषफल 0 है।

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यदि (p=13q+11), तो (4p-9) को 13 से भाग देने पर शेषफल क्या होगा?

If (p=13q+11), what is the remainder when (4p-9) is divided by 13?

Explanation opens after your attempt
Correct Answer

A. 9

Step 1

Concept

The remainder of (p) is 11.

Step 2

Why this answer is correct

The remainder of (4p-9) comes from \(4\times11-9=35\), and \(35=13\times2+9\).

Step 3

Exam Tip

Always reduce the final remainder below the divisor. चरण 1: (p) का शेषफल 11 है। चरण 2: (4p-9) का शेषफल \(4\times11-9=35\) से मिलेगा, और \(35=13\times2+9\)। चरण 3: अंतिम शेषफल को हमेशा भाजक से कम करें।

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यदि (p=11q+8), तो (3p-7) को 11 से भाग देने पर शेषफल क्या होगा?

If (p=11q+8), what is the remainder when (3p-7) is divided by 11?

Explanation opens after your attempt
Correct Answer

B. 6

Step 1

Concept

The remainder of (p) is 8.

Step 2

Why this answer is correct

For (3p-7), the remainder part is \(3\times8-7=17\), and (17=11+6).

Step 3

Exam Tip

In a linear expression, always reduce the final remainder below the divisor. चरण 1: (p) का शेषफल 8 है। चरण 2: (3p-7) में शेषफल \(3\times8-7=17\) होगा, और (17=11+6)। चरण 3: रैखिक व्यंजक में अंतिम शेषफल हमेशा भाजक से छोटा करें।

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यदि (a=13q+1), तो (a-3) को (13) से भाग देने पर शेषफल क्या होगा?

If (a=13q+1), what is the remainder when (a-3) is divided by (13)?

Explanation opens after your attempt
Correct Answer

A. (11)

Step 1

Concept

(a-3=13q-2), but the remainder should not be negative.

Step 2

Why this answer is correct

(13q-2=13(q-1)+11), so the remainder is (11).

Step 3

Exam Tip

When a negative remainder appears, add the divisor to make the correct remainder. चरण 1: (a-3=13q-2) मिलता है, पर शेषफल ऋणात्मक नहीं होना चाहिए। चरण 2: (13q-2=13(q-1)+11), इसलिए शेषफल (11) है। चरण 3: ऋणात्मक शेषफल मिलने पर भाजक जोड़कर सही शेषफल बनाएं।

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यदि (a=20q+17), तो (a-5) को (20) से भाग देने पर शेषफल क्या होगा?

If (a=20q+17), what is the remainder when (a-5) is divided by (20)?

Explanation opens after your attempt
Correct Answer

B. (12)

Step 1

Concept

In (a=20q+17), the remainder is (17).

Step 2

Why this answer is correct

(a-5=20q+12), so the remainder is (12).

Step 3

Exam Tip

In subtraction-based questions, subtract the given number from the old remainder. चरण 1: (a=20q+17) में शेषफल (17) है। चरण 2: (a-5=20q+12), इसलिए शेषफल (12) होगा। चरण 3: घटाव वाले प्रश्न में पुराने शेषफल से घटाई गई संख्या घटाएं।

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