Concept-wise Practice

multiple-variables MCQ Questions for Class 9

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

Practice Questions

13 questions tagged with multiple-variables.

\(2a^2b+6ab^2+4ab\) का पूर्ण गुणनखंडन क्या है?

What is the complete factorisation of \(2a^2b+6ab^2+4ab\)?

Explanation opens after your attempt
Correct Answer

A. (2ab(a+3b+2))

Step 1

Concept

(2ab) is common in all three terms. Taking it out leaves (a+3b+2).

Step 2

Why this answer is correct

The correct answer is A. (2ab(a+3b+2)). (2ab) is common in all three terms. Taking it out leaves (a+3b+2).

Step 3

Exam Tip

तीनों पदों में (2ab) समान है। बाहर निकालने पर (a+3b+2) बचता है।

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(6xy+9xz) का गुणनखंडन क्या है?

What is the factorisation of (6xy+9xz)?

Explanation opens after your attempt
Correct Answer

A. (3x(2y+3z))

Step 1

Concept

(3x) is common in both terms. Therefore (6xy+9xz=3x(2y+3z)).

Step 2

Why this answer is correct

The correct answer is A. (3x(2y+3z)). (3x) is common in both terms. Therefore (6xy+9xz=3x(2y+3z)).

Step 3

Exam Tip

दोनों पदों में (3x) समान है। इसलिए (6xy+9xz=3x(2y+3z)) होगा।

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\(4x^2y-6xy^2-7x^2y+2xy^2\) को सरल करने पर \(xy^2\) का गुणांक क्या होगा?

After simplifying \(4x^2y-6xy^2-7x^2y+2xy^2\), what will be the coefficient of \(xy^2\)?

Explanation opens after your attempt
Correct Answer

B. (-4)

Step 1

Concept

The \(xy^2\) terms are \(-6xy^2\) and \(2xy^2\). Their sum is \(-4xy^2\).

Step 2

Why this answer is correct

The correct answer is B. (-4). The \(xy^2\) terms are \(-6xy^2\) and \(2xy^2\). Their sum is \(-4xy^2\).

Step 3

Exam Tip

\(xy^2\) वाले पद \(-6xy^2\) और \(2xy^2\) हैं। इनका योग \(-4xy^2\) है।

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\(9u^2v-5uv+3u^2v+8uv-10\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(9u^2v-5uv+3u^2v+8uv-10\)?

Explanation opens after your attempt
Correct Answer

C. \(12u^2v+3uv-10\)

Step 1

Concept

\(9u^2v+3u^2v=12u^2v\) and (-5uv+8uv=3uv). The constant term (-10) remains separate.

Step 2

Why this answer is correct

The correct answer is C. \(12u^2v+3uv-10\). \(9u^2v+3u^2v=12u^2v\) and (-5uv+8uv=3uv). The constant term (-10) remains separate.

Step 3

Exam Tip

\(9u^2v+3u^2v=12u^2v\) और (-5uv+8uv=3uv)। स्थिर पद (-10) अलग रहेगा।

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\(9a^2b-4ab^2-6a^2b+11ab^2\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(9a^2b-4ab^2-6a^2b+11ab^2\)?

Explanation opens after your attempt
Correct Answer

C. \(3a^2b+7ab^2\)

Step 1

Concept

Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore the simplified form is \(3a^2b+7ab^2\).

Step 2

Why this answer is correct

The correct answer is C. \(3a^2b+7ab^2\). Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore the simplified form is \(3a^2b+7ab^2\).

Step 3

Exam Tip

\(a^2b\) और \(ab^2\) वाले पद अलग-अलग मिलते हैं। इसलिए सरल रूप \(3a^2b+7ab^2\) है।

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\(3x^2y+2xy^2-5x^2y+8xy^2\) को सरल करने पर \(x^2y\) का गुणांक क्या होगा?

After simplifying \(3x^2y+2xy^2-5x^2y+8xy^2\), what will be the coefficient of \(x^2y\)?

Explanation opens after your attempt
Correct Answer

B. (-2)

Step 1

Concept

The \(x^2y\) terms are \(3x^2y\) and \(-5x^2y\). Their sum is \(-2x^2y\).

Step 2

Why this answer is correct

The correct answer is B. (-2). The \(x^2y\) terms are \(3x^2y\) and \(-5x^2y\). Their sum is \(-2x^2y\).

Step 3

Exam Tip

\(x^2y\) वाले पद \(3x^2y\) और \(-5x^2y\) हैं। इनका योग \(-2x^2y\) है।

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\(5u^2v-3uv+2u^2v+6uv-4\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(5u^2v-3uv+2u^2v+6uv-4\)?

Explanation opens after your attempt
Correct Answer

A. \(7u^2v+3uv-4\)

Step 1

Concept

\(5u^2v+2u^2v=7u^2v\) and (-3uv+6uv=3uv). The constant term (-4) remains separate.

Step 2

Why this answer is correct

The correct answer is A. \(7u^2v+3uv-4\). \(5u^2v+2u^2v=7u^2v\) and (-3uv+6uv=3uv). The constant term (-4) remains separate.

Step 3

Exam Tip

\(5u^2v+2u^2v=7u^2v\) और (-3uv+6uv=3uv)। स्थिर पद (-4) अलग रहेगा।

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\(6a^2b+2ab^2-4a^2b+9ab^2\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(6a^2b+2ab^2-4a^2b+9ab^2\)?

Explanation opens after your attempt
Correct Answer

C. \(2a^2b+11ab^2\)

Step 1

Concept

Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore, the result is \(2a^2b+11ab^2\).

Step 2

Why this answer is correct

The correct answer is C. \(2a^2b+11ab^2\). Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore, the result is \(2a^2b+11ab^2\).

Step 3

Exam Tip

\(a^2b\) वाले पद और \(ab^2\) वाले पद अलग-अलग मिलते हैं। इसलिए परिणाम \(2a^2b+11ab^2\) है।

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\(9r^2s-4rs+rs-5r^2s\) को सरल करने पर \(r^2s\) का गुणांक क्या होगा?

After simplifying \(9r^2s-4rs+rs-5r^2s\), what will be the coefficient of \(r^2s\)?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

The \(r^2s\) terms are \(9r^2s\) and \(-5r^2s\). Their sum is \(4r^2s\).

Step 2

Why this answer is correct

The correct answer is B. (4). The \(r^2s\) terms are \(9r^2s\) and \(-5r^2s\). Their sum is \(4r^2s\).

Step 3

Exam Tip

\(r^2s\) वाले पद \(9r^2s\) और \(-5r^2s\) हैं। उनका योग \(4r^2s\) है।

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\(4a^2b-3ab^2+5a^2b+7ab^2\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(4a^2b-3ab^2+5a^2b+7ab^2\)?

Explanation opens after your attempt
Correct Answer

A. \(9a^2b+4ab^2\)

Step 1

Concept

Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore the answer is \(9a^2b+4ab^2\).

Step 2

Why this answer is correct

The correct answer is A. \(9a^2b+4ab^2\). Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore the answer is \(9a^2b+4ab^2\).

Step 3

Exam Tip

\(a^2b\) वाले पद और \(ab^2\) वाले पद अलग-अलग मिलेंगे। इसलिए उत्तर \(9a^2b+4ab^2\) है।

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\(5p^2q-3pq+2p^2q\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(5p^2q-3pq+2p^2q\)?

Explanation opens after your attempt
Correct Answer

A. \(7p^2q-3pq\)

Step 1

Concept

\(5p^2q\) and \(2p^2q\) are like terms. (-3pq) has a different variable part.

Step 2

Why this answer is correct

The correct answer is A. \(7p^2q-3pq\). \(5p^2q\) and \(2p^2q\) are like terms. (-3pq) has a different variable part.

Step 3

Exam Tip

\(5p^2q\) और \(2p^2q\) समान पद हैं। (-3pq) अलग चर भाग वाला पद है।

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\(3ab^2\) और \(-10ab^2\) के बारे में सही कथन कौन-सा है?

Which statement is correct about \(3ab^2\) and \(-10ab^2\)?

Explanation opens after your attempt
Correct Answer

C. ये समान पद हैंThey are like terms

Step 1

Concept

Both terms have the same variable part \(ab^2\). Terms can be like even if coefficients are different.

Step 2

Why this answer is correct

The correct answer is C. ये समान पद हैं / They are like terms. Both terms have the same variable part \(ab^2\). Terms can be like even if coefficients are different.

Step 3

Exam Tip

दोनों पदों का चर भाग \(ab^2\) समान है। गुणांक अलग होने पर भी पद समान हो सकते हैं।

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\(8a^2b-3a^2b+4ab\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(8a^2b-3a^2b+4ab\)?

Explanation opens after your attempt
Correct Answer

A. \(5a^2b+4ab\)

Step 1

Concept

\(8a^2b\) and \(-3a^2b\) are like terms. (4ab) has different powers, so it remains separate.

Step 2

Why this answer is correct

The correct answer is A. \(5a^2b+4ab\). \(8a^2b\) and \(-3a^2b\) are like terms. (4ab) has different powers, so it remains separate.

Step 3

Exam Tip

\(8a^2b\) और \(-3a^2b\) समान पद हैं। (4ab) की घातें अलग हैं इसलिए वह अलग रहेगा।

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