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Mathematics Quiz - Class 9 Mathematics Number Systems Rat...

Question 1/49 Easy Mathematics MIX Variables and Constants Class 9 Level 2

(3x+5) में चर कौन-सा है?

Which is the variable in (3x+5)?

Explanation opens after your attempt

Correct Answer

B. (x)

Step 1

Concept

A variable is a quantity whose value can change. In exams identify the letter part first.

Step 2

Why this answer is correct

The correct answer is B. (x). A variable is a quantity whose value can change. In exams identify the letter part first.

Step 3

Exam Tip

चर वह राशि है जिसका मान बदल सकता है। परीक्षा में अक्षर वाले भाग को पहले पहचानें।

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Question 2/49 Easy Mathematics MIX Coefficients Class 9 Level 2

(7a) में (a) का गुणांक क्या है?

What is the coefficient of (a) in (7a)?

Explanation opens after your attempt

Correct Answer

B. (7)

Step 1

Concept

The number multiplying the variable is called the coefficient. In a monomial take the numerical part as coefficient.

Step 2

Why this answer is correct

The correct answer is B. (7). The number multiplying the variable is called the coefficient. In a monomial take the numerical part as coefficient.

Step 3

Exam Tip

चर के साथ गुणा होने वाली संख्या गुणांक कहलाती है। एकपदी में संख्या भाग को गुणांक मानें।

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Question 3/49 Easy Mathematics MIX Constants Class 9 Level 2

(4p-9) में स्थिर पद कौन-सा है?

Which is the constant term in (4p-9)?

Explanation opens after your attempt

Correct Answer

C. (-9)

Step 1

Concept

A constant term has no variable. Always read the term with its sign.

Step 2

Why this answer is correct

The correct answer is C. (-9). A constant term has no variable. Always read the term with its sign.

Step 3

Exam Tip

स्थिर पद में कोई चर नहीं होता है। चिह्न के साथ पद को पढ़ना जरूरी है।

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Question 4/49 Easy Mathematics MIX Like Terms Class 9 Level 2

(2x+3x) का सरल रूप क्या है?

What is the simplified form of (2x+3x)?

Explanation opens after your attempt

Correct Answer

A. (5x)

Step 1

Concept

Coefficients of like terms are added. If the variable part is same add only the numerical part.

Step 2

Why this answer is correct

The correct answer is A. (5x). Coefficients of like terms are added. If the variable part is same add only the numerical part.

Step 3

Exam Tip

समान पदों के गुणांक जोड़े जाते हैं। चर भाग समान रहे तो केवल संख्या भाग जोड़ें।

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Question 5/49 Easy Mathematics MIX Like Terms Class 9 Level 2

(9y-4y) का मान क्या होगा?

What is the value of (9y-4y)?

Explanation opens after your attempt

Correct Answer

B. (5y)

Step 1

Concept

(9y) and (4y) are like terms so their coefficients are subtracted. In exams watch the sign carefully.

Step 2

Why this answer is correct

The correct answer is B. (5y). (9y) and (4y) are like terms so their coefficients are subtracted. In exams watch the sign carefully.

Step 3

Exam Tip

(9y) और (4y) समान पद हैं इसलिए गुणांक घटेंगे। परीक्षा में घटाव में चिह्न पर ध्यान दें।

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Question 6/49 Easy Mathematics MIX Algebraic Expressions Class 9 Level 2

(x+x+x+x) किसके बराबर है?

(x+x+x+x) is equal to which expression?

Explanation opens after your attempt

Correct Answer

B. (4x)

Step 1

Concept

Repeated addition of the same variable becomes multiplication. Adding (x) four times gives (4x).

Step 2

Why this answer is correct

The correct answer is B. (4x). Repeated addition of the same variable becomes multiplication. Adding (x) four times gives (4x).

Step 3

Exam Tip

एक ही चर का बार-बार जोड़ गुणा में बदलता है। (4) बार (x) जोड़ने पर (4x) मिलता है।

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Question 7/49 Easy Mathematics MIX Substitution Class 9 Level 2

यदि (x=6) हो तो (x+8) का मान क्या होगा?

If (x=6) then what is the value of (x+8)?

Explanation opens after your attempt

Correct Answer

B. (14)

Step 1

Concept

Substituting (6) for (x) gives (6+8=14). Substitute first while evaluating.

Step 2

Why this answer is correct

The correct answer is B. (14). Substituting (6) for (x) gives (6+8=14). Substitute first while evaluating.

Step 3

Exam Tip

(x) के स्थान पर (6) रखने से (6+8=14) मिलता है। मान निकालते समय पहले प्रतिस्थापन करें।

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Question 8/49 Easy Mathematics MIX Substitution Class 9 Level 2

यदि (a=5) हो तो (3a) का मान क्या है?

If (a=5) then what is the value of (3a)?

Explanation opens after your attempt

Correct Answer

B. (15)

Step 1

Concept

(3a) means \(3\times a\). So \(3\times5=15\).

Step 2

Why this answer is correct

The correct answer is B. (15). (3a) means \(3\times a\). So \(3\times5=15\).

Step 3

Exam Tip

(3a) का अर्थ \(3\times a\) है। इसलिए \(3\times5=15\) होगा।

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Question 9/49 Easy Mathematics MIX Terms of Expressions Class 9 Level 2

(2m+7) में कितने पद हैं?

How many terms are there in (2m+7)?

Explanation opens after your attempt

Correct Answer

B. (2)

Step 1

Concept

Terms are separated by (+) or (-) signs. Here (2m) and (7) are two terms.

Step 2

Why this answer is correct

The correct answer is B. (2). Terms are separated by (+) or (-) signs. Here (2m) and (7) are two terms.

Step 3

Exam Tip

पद (+) या (-) चिह्नों से अलग होते हैं। यहाँ (2m) और (7) दो पद हैं।

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Question 10/49 Easy Mathematics MIX Types of Expressions Class 9 Level 2

\(5x^2\) किस प्रकार का बीजीय व्यंजक है?

What type of algebraic expression is \(5x^2\)?

Explanation opens after your attempt

Correct Answer

A. एकपदीMonomial

Step 1

Concept

An expression with one term is called a monomial. Identify the type by counting terms.

Step 2

Why this answer is correct

The correct answer is A. एकपदी / Monomial. An expression with one term is called a monomial. Identify the type by counting terms.

Step 3

Exam Tip

एक पद वाला व्यंजक एकपदी कहलाता है। पदों की संख्या देखकर प्रकार पहचानें।

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Question 11/49 Easy Mathematics MIX Types of Expressions Class 9 Level 2

(p+q) किस प्रकार का व्यंजक है?

What type of expression is (p+q)?

Explanation opens after your attempt

Correct Answer

B. द्विपदीBinomial

Step 1

Concept

(p+q) has two terms so it is a binomial. Count the terms separately.

Step 2

Why this answer is correct

The correct answer is B. द्विपदी / Binomial. (p+q) has two terms so it is a binomial. Count the terms separately.

Step 3

Exam Tip

(p+q) में दो पद हैं इसलिए यह द्विपदी है। पदों को अलग-अलग गिनें।

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Question 12/49 Easy Mathematics MIX Terms of Expressions Class 9 Level 2

(a+b+c) में पदों की संख्या कितनी है?

How many terms are there in (a+b+c)?

Explanation opens after your attempt

Correct Answer

C. (3)

Step 1

Concept

(a), (b), and (c) are three separate terms. Count the terms separated by plus signs.

Step 2

Why this answer is correct

The correct answer is C. (3). (a), (b), and (c) are three separate terms. Count the terms separated by plus signs.

Step 3

Exam Tip

(a), (b), और (c) तीन अलग पद हैं। जोड़ चिह्नों से अलग पदों को गिनें।

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Question 13/49 Easy Mathematics MIX Degree of Polynomial Class 9 Level 2

\(2x^2+3x+1\) की घात क्या है?

What is the degree of \(2x^2+3x+1\)?

Explanation opens after your attempt

Correct Answer

B. (2)

Step 1

Concept

The degree of a polynomial is the highest power of the variable. Here the highest power is (2).

Step 2

Why this answer is correct

The correct answer is B. (2). The degree of a polynomial is the highest power of the variable. Here the highest power is (2).

Step 3

Exam Tip

बहुपद की घात चर की सबसे बड़ी घात होती है। यहाँ सबसे बड़ी घात (2) है।

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Question 14/49 Easy Mathematics MIX Variables and Constants Class 9 Level 2

(8) को बीजीय रूप में किस प्रकार माना जाएगा?

How is (8) treated in algebraic form?

Explanation opens after your attempt

Correct Answer

C. स्थिरांकConstant

Step 1

Concept

The value of (8) does not change so it is a constant. A number without a variable is a constant.

Step 2

Why this answer is correct

The correct answer is C. स्थिरांक / Constant. The value of (8) does not change so it is a constant. A number without a variable is a constant.

Step 3

Exam Tip

(8) का मान बदलता नहीं है इसलिए यह स्थिरांक है। बिना चर वाली संख्या को स्थिरांक पहचानें।

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Question 15/49 Easy Mathematics MIX Like and Unlike Terms Class 9 Level 2

(6x) और (6y) कैसे पद हैं?

What kind of terms are (6x) and (6y)?

Explanation opens after your attempt

Correct Answer

B. असमान पदUnlike terms

Step 1

Concept

The variable parts are different so these are unlike terms. Like terms must have the same variables and powers.

Step 2

Why this answer is correct

The correct answer is B. असमान पद / Unlike terms. The variable parts are different so these are unlike terms. Like terms must have the same variables and powers.

Step 3

Exam Tip

चर भाग अलग हैं इसलिए ये असमान पद हैं। समान पदों में चर और उनकी घात समान होनी चाहिए।

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Question 16/49 Easy Mathematics MIX Like and Unlike Terms Class 9 Level 2

(4a) और (-2a) कैसे पद हैं?

What kind of terms are (4a) and (-2a)?

Explanation opens after your attempt

Correct Answer

B. समान पदLike terms

Step 1

Concept

Both terms have the variable part (a) so they are like terms. Different coefficients do not change that.

Step 2

Why this answer is correct

The correct answer is B. समान पद / Like terms. Both terms have the variable part (a) so they are like terms. Different coefficients do not change that.

Step 3

Exam Tip

दोनों पदों का चर भाग (a) है इसलिए ये समान पद हैं। गुणांक अलग होने से समानता नहीं बदलती।

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Question 17/49 Easy Mathematics MIX Coefficients Class 9 Level 2

(10z) का संख्यात्मक गुणांक क्या है?

What is the numerical coefficient of (10z)?

Explanation opens after your attempt

Correct Answer

B. (10)

Step 1

Concept

The numerical coefficient is the number attached to the variable. Here (10) is attached to (z).

Step 2

Why this answer is correct

The correct answer is B. (10). The numerical coefficient is the number attached to the variable. Here (10) is attached to (z).

Step 3

Exam Tip

संख्यात्मक गुणांक चर के साथ लगी संख्या होती है। यहाँ (z) के साथ (10) है।

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Question 18/49 Easy Mathematics MIX Laws of Exponents Class 9 Level 2

\(x^2\cdot x^3\) का सरल रूप क्या है?

What is the simplified form of \(x^2\cdot x^3\)?

Explanation opens after your attempt

Correct Answer

A. \(x^5\)

Step 1

Concept

When multiplying same bases powers are added. Therefore \(x^2\cdot x^3=x^5\).

Step 2

Why this answer is correct

The correct answer is A. \(x^5\). When multiplying same bases powers are added. Therefore \(x^2\cdot x^3=x^5\).

Step 3

Exam Tip

समान आधार में गुणा करते समय घातें जुड़ती हैं। इसलिए \(x^2\cdot x^3=x^5\)।

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Question 19/49 Easy Mathematics MIX Laws of Exponents Class 9 Level 2

\(\frac{x^6}{x^2}\) का सरल रूप क्या है?

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

Explanation opens after your attempt

Correct Answer

B. \(x^4\)

Step 1

Concept

When dividing same bases powers are subtracted. Here (6-2=4).

Step 2

Why this answer is correct

The correct answer is B. \(x^4\). When dividing same bases powers are subtracted. Here (6-2=4).

Step 3

Exam Tip

समान आधार में भाग करते समय घातें घटती हैं। यहाँ (6-2=4) है।

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Question 20/49 Easy Mathematics MIX Laws of Exponents Class 9 Level 2

((x)⁰) का मान क्या है जब \(x\neq0\)?

What is the value of ((x)⁰) when \(x\neq0\)?

Explanation opens after your attempt

Correct Answer

B. (1)

Step 1

Concept

Any non-zero number or variable raised to zero is (1). This is a direct use of exponent law.

Step 2

Why this answer is correct

The correct answer is B. (1). Any non-zero number or variable raised to zero is (1). This is a direct use of exponent law.

Step 3

Exam Tip

किसी भी अशून्य संख्या या चर की शून्य घात (1) होती है। यह घात नियम का सीधा प्रयोग है।

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Question 21/49 Easy Mathematics MIX Substitution Class 9 Level 2

यदि (y=4) हो तो \(y^2\) का मान क्या है?

If (y=4) then what is the value of \(y^2\)?

Explanation opens after your attempt

Correct Answer

C. (16)

Step 1

Concept

In \(y^2\), \(4^2=16\). Power means repeated multiplication.

Step 2

Why this answer is correct

The correct answer is C. (16). In \(y^2\), \(4^2=16\). Power means repeated multiplication.

Step 3

Exam Tip

\(y^2\) में \(4^2=16\) होगा। घात का अर्थ बार-बार गुणा होता है।

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Question 22/49 Easy Mathematics MIX Expansion Class 9 Level 2

(2(x+3)) का विस्तृत रूप क्या है?

What is the expanded form of (2(x+3))?

Explanation opens after your attempt

Correct Answer

C. (2x+6)

Step 1

Concept

Multiply (2) with both terms inside the bracket. So we get (2x+6).

Step 2

Why this answer is correct

The correct answer is C. (2x+6). Multiply (2) with both terms inside the bracket. So we get (2x+6).

Step 3

Exam Tip

(2) को कोष्ठक के दोनों पदों से गुणा करें। इसलिए (2x+6) प्राप्त होता है।

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Question 23/49 Easy Mathematics MIX Expansion Class 9 Level 2

(3(a-2)) का सही विस्तारण क्या है?

What is the correct expansion of (3(a-2))?

Explanation opens after your attempt

Correct Answer

A. (3a-6)

Step 1

Concept

Multiply (3) by both (a) and (-2). Do not miss the negative sign.

Step 2

Why this answer is correct

The correct answer is A. (3a-6). Multiply (3) by both (a) and (-2). Do not miss the negative sign.

Step 3

Exam Tip

(3) को (a) और (-2) दोनों से गुणा करें। ऋण चिह्न को न छोड़ें।

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Question 24/49 Easy Mathematics MIX Simplification Class 9 Level 2

(5(x-1)+2x) का सरल रूप क्या है?

What is the simplified form of (5(x-1)+2x)?

Explanation opens after your attempt

Correct Answer

A. (7x-5)

Step 1

Concept

First get (5x-5) then add (2x). Combine like terms at the end.

Step 2

Why this answer is correct

The correct answer is A. (7x-5). First get (5x-5) then add (2x). Combine like terms at the end.

Step 3

Exam Tip

पहले (5x-5) मिलेगा फिर (2x) जोड़ें। समान पदों को अंत में मिलाएँ।

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Question 25/49 Easy Mathematics MIX Simplification Class 9 Level 2

(a+a+2a) का सरल रूप क्या है?

What is the simplified form of (a+a+2a)?

Explanation opens after your attempt

Correct Answer

B. (4a)

Step 1

Concept

The coefficient of (a) is (1). So (1a+1a+2a=4a).

Step 2

Why this answer is correct

The correct answer is B. (4a). The coefficient of (a) is (1). So (1a+1a+2a=4a).

Step 3

Exam Tip

(a) का गुणांक (1) होता है। (1a+1a+2a=4a) होगा।

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Question 26/49 Easy Mathematics MIX Addition of Expressions Class 9 Level 2

(6u+2v) और (3u+5v) को जोड़ने पर क्या मिलेगा?

What is obtained by adding (6u+2v) and (3u+5v)?

Explanation opens after your attempt

Correct Answer

A. (9u+7v)

Step 1

Concept

Add the (u)-terms and (v)-terms separately. This gives (9u+7v).

Step 2

Why this answer is correct

The correct answer is A. (9u+7v). Add the (u)-terms and (v)-terms separately. This gives (9u+7v).

Step 3

Exam Tip

(u) वाले और (v) वाले समान पद अलग-अलग जोड़ें। इससे (9u+7v) मिलता है।

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Question 27/49 Easy Mathematics MIX Subtraction of Expressions Class 9 Level 2

((8x+1)-(3x+1)) का सरल रूप क्या है?

What is the simplified form of ((8x+1)-(3x+1))?

Explanation opens after your attempt

Correct Answer

A. (5x)

Step 1

Concept

Change the signs of the second bracket while subtracting. (8x+1-3x-1=5x).

Step 2

Why this answer is correct

The correct answer is A. (5x). Change the signs of the second bracket while subtracting. (8x+1-3x-1=5x).

Step 3

Exam Tip

दूसरे कोष्ठक के चिह्न बदलकर घटाएँ। (8x+1-3x-1=5x) होगा।

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Question 28/49 Easy Mathematics MIX Linear Equations Class 9 Level 2

(x+5=12) में (x) का मान क्या है?

What is the value of (x) in (x+5=12)?

Explanation opens after your attempt

Correct Answer

B. (7)

Step 1

Concept

Subtracting (5) from both sides gives (x=7). Keep the equation balanced.

Step 2

Why this answer is correct

The correct answer is B. (7). Subtracting (5) from both sides gives (x=7). Keep the equation balanced.

Step 3

Exam Tip

दोनों ओर से (5) घटाने पर (x=7) मिलता है। समीकरण में संतुलन बनाए रखें।

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Question 29/49 Easy Mathematics MIX Linear Equations Class 9 Level 2

(m^-4=9) में (m) का मान क्या है?

What is the value of (m) in (m^-4=9)?

Explanation opens after your attempt

Correct Answer

B. (13)

Step 1

Concept

Adding (4) to both sides gives (m=13). Use the inverse operation.

Step 2

Why this answer is correct

The correct answer is B. (13). Adding (4) to both sides gives (m=13). Use the inverse operation.

Step 3

Exam Tip

दोनों ओर (4) जोड़ने पर (m=13) मिलता है। उल्टा ऑपरेशन प्रयोग करें।

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Question 30/49 Easy Mathematics MIX Linear Equations Class 9 Level 2

(2t=18) में (t) का मान क्या है?

What is the value of (t) in (2t=18)?

Explanation opens after your attempt

Correct Answer

B. (9)

Step 1

Concept

Dividing both sides by (2) gives (t=9). Divide to undo multiplication.

Step 2

Why this answer is correct

The correct answer is B. (9). Dividing both sides by (2) gives (t=9). Divide to undo multiplication.

Step 3

Exam Tip

दोनों ओर (2) से भाग देने पर (t=9) मिलता है। गुणा को हटाने के लिए भाग करें।

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Question 31/49 Easy Mathematics MIX Linear Equations Class 9 Level 2

\(\frac{n}{3}=6\) में (n) का मान क्या है?

What is the value of (n) in \(\frac{n}{3}=6\)?

Explanation opens after your attempt

Correct Answer

C. (18)

Step 1

Concept

Multiplying both sides by (3) gives (n=18). Multiply by the denominator to remove the fraction.

Step 2

Why this answer is correct

The correct answer is C. (18). Multiplying both sides by (3) gives (n=18). Multiply by the denominator to remove the fraction.

Step 3

Exam Tip

दोनों ओर (3) से गुणा करने पर (n=18) मिलता है। भिन्न हटाने के लिए हर से गुणा करें।

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Question 32/49 Easy Mathematics MIX Linear Equations Class 9 Level 2

(3p-2=10) में (p) का मान क्या है?

What is the value of (p) in (3p-2=10)?

Explanation opens after your attempt

Correct Answer

C. (4)

Step 1

Concept

First add (2) then divide by (3). From (3p=12), (p=4).

Step 2

Why this answer is correct

The correct answer is C. (4). First add (2) then divide by (3). From (3p=12), (p=4).

Step 3

Exam Tip

पहले (2) जोड़ें फिर (3) से भाग दें। (3p=12) से (p=4) मिलेगा।

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Question 33/49 Easy Mathematics MIX Algebraic Identities Class 9 Level 2

\(x^2+2x+1\) किस पहचान से जुड़ा है?

Which identity is related to \(x^2+2x+1\)?

Explanation opens after your attempt

Correct Answer

A. ((x+1)²)

Step 1

Concept

This is the form (a^-2+2ab+b^-2=(a+b)²). Check the sign of the middle term in identities.

Step 2

Why this answer is correct

The correct answer is A. ((x+1)²). This is the form (a^-2+2ab+b^-2=(a+b)²). Check the sign of the middle term in identities.

Step 3

Exam Tip

यह (a^-2+2ab+b^-2=(a+b)²) का रूप है। पहचान में मध्य पद के चिह्न को देखें।

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Question 34/49 Easy Mathematics MIX Algebraic Identities Class 9 Level 2

((a+b)²) का सूत्र क्या है?

What is the formula for ((a+b)²)?

Explanation opens after your attempt

Correct Answer

B. \(a^2+2ab+b^2\)

Step 1

Concept

In ((a+b)²), the middle term is (+2ab). Remember identities with signs.

Step 2

Why this answer is correct

The correct answer is B. \(a^2+2ab+b^2\). In ((a+b)²), the middle term is (+2ab). Remember identities with signs.

Step 3

Exam Tip

((a+b)²) में मध्य पद (+2ab) होता है। सूत्रों को चिह्न सहित याद करें।

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Question 35/49 Easy Mathematics MIX Algebraic Identities Class 9 Level 2

((a-b)²) का सही विस्तार कौन-सा है?

Which is the correct expansion of ((a-b)²)?

Explanation opens after your attempt

Correct Answer

B. \(a^2-2ab+b^2\)

Step 1

Concept

In ((a-b)²), the middle term is (-2ab). Never ignore the negative sign.

Step 2

Why this answer is correct

The correct answer is B. \(a^2-2ab+b^2\). In ((a-b)²), the middle term is (-2ab). Never ignore the negative sign.

Step 3

Exam Tip

((a-b)²) में मध्य पद (-2ab) होता है। ऋण चिह्न को कभी न छोड़ें।

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Question 36/49 Easy Mathematics MIX Algebraic Identities Class 9 Level 2

((a+b)(a-b)) किसके बराबर है?

((a+b)(a-b)) is equal to what?

Explanation opens after your attempt

Correct Answer

B. \(a^2-b^2\)

Step 1

Concept

This is the difference of squares identity. Remember ((a+b)(a-b)=a^-2-b^-2).

Step 2

Why this answer is correct

The correct answer is B. \(a^2-b^2\). This is the difference of squares identity. Remember ((a+b)(a-b)=a^-2-b^-2).

Step 3

Exam Tip

यह अंतर वर्ग पहचान है। याद रखें कि ((a+b)(a-b)=a^-2-b^-2)।

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Question 37/49 Easy Mathematics MIX Squares and Square Roots Class 9 Level 2

\(9x^2\) का वर्गमूल क्या है?

What is the square root of \(9x^2\)?

Explanation opens after your attempt

Correct Answer

A. (3x)

Step 1

Concept

The square root of (9) is (3) and of \(x^2\) is (x). Check both parts in square root.

Step 2

Why this answer is correct

The correct answer is A. (3x). The square root of (9) is (3) and of \(x^2\) is (x). Check both parts in square root.

Step 3

Exam Tip

(9) का वर्गमूल (3) और \(x^2\) का वर्गमूल (x) है। वर्गमूल में दोनों भाग देखें।

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Question 38/49 Easy Mathematics MIX Squares and Square Roots Class 9 Level 2

\(25a^2\) किसका वर्ग है?

\(25a^2\) is the square of which expression?

Explanation opens after your attempt

Correct Answer

A. (5a)

Step 1

Concept

((5a)²=25a^-2). In a square both the number and variable powers are squared.

Step 2

Why this answer is correct

The correct answer is A. (5a). ((5a)²=25a^-2). In a square both the number and variable powers are squared.

Step 3

Exam Tip

((5a)²=25a^-2) होता है। वर्ग में संख्या और चर दोनों की घात दोगुनी होती है।

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Question 39/49 Easy Mathematics MIX Factorisation Class 9 Level 2

\(x^2-16\) का गुणनखंड रूप क्या है?

What is the factorized form of \(x^2-16\)?

Explanation opens after your attempt

Correct Answer

A. ((x-4)(x+4))

Step 1

Concept

\(x^2-16=x^2-4^2\). Apply the difference of squares formula.

Step 2

Why this answer is correct

The correct answer is A. ((x-4)(x+4)). \(x^2-16=x^2-4^2\). Apply the difference of squares formula.

Step 3

Exam Tip

\(x^2-16=x^2-4^2\) है। अंतर वर्ग सूत्र लगाएँ।

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Question 40/49 Easy Mathematics MIX Factorisation Class 9 Level 2

(2x+6) का सामान्य गुणनखंड क्या है?

What is the common factor of (2x+6)?

Explanation opens after your attempt

Correct Answer

A. (2)

Step 1

Concept

Both (2x) and (6) have (2) as common. Take out the simplest common factor first.

Step 2

Why this answer is correct

The correct answer is A. (2). Both (2x) and (6) have (2) as common. Take out the simplest common factor first.

Step 3

Exam Tip

(2x) और (6) दोनों में (2) सामान्य है। सबसे सरल सामान्य गुणनखंड पहले निकालें।

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Question 41/49 Easy Mathematics MIX Factorisation Class 9 Level 2

(3a+3b) का गुणनखंड रूप क्या है?

What is the factorized form of (3a+3b)?

Explanation opens after your attempt

Correct Answer

A. (3(a+b))

Step 1

Concept

Both terms have (3) in common. Write the common factor outside.

Step 2

Why this answer is correct

The correct answer is A. (3(a+b)). Both terms have (3) in common. Write the common factor outside.

Step 3

Exam Tip

दोनों पदों में (3) सामान्य है। सामान्य गुणनखंड बाहर लिखें।

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Question 42/49 Easy Mathematics MIX Factorisation Class 9 Level 2

(ab+ac) का गुणनखंड रूप क्या है?

What is the factorized form of (ab+ac)?

Explanation opens after your attempt

Correct Answer

A. (a(b+c))

Step 1

Concept

Both terms have (a) in common. Therefore (a(b+c)) is correct.

Step 2

Why this answer is correct

The correct answer is A. (a(b+c)). Both terms have (a) in common. Therefore (a(b+c)) is correct.

Step 3

Exam Tip

दोनों पदों में (a) सामान्य है। इसलिए (a(b+c)) सही रूप है।

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Question 43/49 Easy Mathematics MIX Factorisation Class 9 Level 2

\(x^2+5x\) का गुणनखंड रूप क्या है?

What is the factorized form of \(x^2+5x\)?

Explanation opens after your attempt

Correct Answer

A. (x(x+5))

Step 1

Concept

Both terms have (x) in common. Taking (x) out gives (x(x+5)).

Step 2

Why this answer is correct

The correct answer is A. (x(x+5)). Both terms have (x) in common. Taking (x) out gives (x(x+5)).

Step 3

Exam Tip

दोनों पदों में (x) सामान्य है। (x) बाहर लेने पर (x(x+5)) मिलता है।

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Question 44/49 Easy Mathematics MIX Substitution Class 9 Level 2

यदि (r=2) और (s=3) हों तो (r+s) का मान क्या है?

If (r=2) and (s=3), what is the value of (r+s)?

Explanation opens after your attempt

Correct Answer

B. (5)

Step 1

Concept

Substituting the given values gives (2+3=5). When there are two variables substitute both.

Step 2

Why this answer is correct

The correct answer is B. (5). Substituting the given values gives (2+3=5). When there are two variables substitute both.

Step 3

Exam Tip

दिए गए मान रखने पर (2+3=5) होता है। दो चर हों तो दोनों का प्रतिस्थापन करें।

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Question 45/49 Easy Mathematics MIX Substitution Class 9 Level 2

यदि (u=7) और (v=2) हों तो (u-v) का मान क्या होगा?

If (u=7) and (v=2), what is the value of (u-v)?

Explanation opens after your attempt

Correct Answer

B. (5)

Step 1

Concept

(u-v=7-2=5). In subtraction changing the order can change the answer.

Step 2

Why this answer is correct

The correct answer is B. (5). (u-v=7-2=5). In subtraction changing the order can change the answer.

Step 3

Exam Tip

(u-v=7-2=5) है। घटाव में क्रम बदलने से उत्तर बदल सकता है।

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Question 46/49 Easy Mathematics MIX Variables and Constants Class 9 Level 2

(4xy) में चरों की संख्या कितनी है?

How many variables are there in (4xy)?

Explanation opens after your attempt

Correct Answer

B. (2)

Step 1

Concept

In (4xy), the variables are (x) and (y). The number (4) is the coefficient.

Step 2

Why this answer is correct

The correct answer is B. (2). In (4xy), the variables are (x) and (y). The number (4) is the coefficient.

Step 3

Exam Tip

(4xy) में चर (x) और (y) हैं। संख्या (4) गुणांक है।

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Question 47/49 Easy Mathematics MIX Coefficients Class 9 Level 2

(12pq) में संख्यात्मक गुणांक कौन-सा है?

Which is the numerical coefficient in (12pq)?

Explanation opens after your attempt

Correct Answer

C. (12)

Step 1

Concept

The numerical coefficient is only the number part. Here (12) is the number part.

Step 2

Why this answer is correct

The correct answer is C. (12). The numerical coefficient is only the number part. Here (12) is the number part.

Step 3

Exam Tip

संख्यात्मक गुणांक केवल संख्या भाग होता है। यहाँ (12) संख्या भाग है।

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Question 48/49 Easy Mathematics MIX Coefficients Class 9 Level 2

\(x^2+3x+2\) में (x) का गुणांक क्या है?

What is the coefficient of (x) in \(x^2+3x+2\)?

Explanation opens after your attempt

Correct Answer

C. (3)

Step 1

Concept

The term containing (x) is (3x), so the coefficient is (3). Notice the power of the variable asked in the question.

Step 2

Why this answer is correct

The correct answer is C. (3). The term containing (x) is (3x), so the coefficient is (3). Notice the power of the variable asked in the question.

Step 3

Exam Tip

(x) वाला पद (3x) है इसलिए गुणांक (3) है। प्रश्न में पूछे गए चर की घात को ध्यान से देखें।

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Question 49/49 Easy Mathematics MIX Degree of Polynomial Class 9 Level 2

\(7x^3+2x^2+x+9\) की घात क्या है?

What is the degree of \(7x^3+2x^2+x+9\)?

Explanation opens after your attempt

Correct Answer

C. (3)

Step 1

Concept

The highest power is (3), so the degree of the polynomial is (3). Take the highest power as the answer.

Step 2

Why this answer is correct

The correct answer is C. (3). The highest power is (3), so the degree of the polynomial is (3). Take the highest power as the answer.

Step 3

Exam Tip

सबसे बड़ी घात (3) है इसलिए बहुपद की घात (3) होगी। सबसे ऊँची घात को ही उत्तर मानें।

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Class 9 Mathematics - Number Systems - Rational numbers Easy Quiz

(3x+5) में चर कौन-सा है?

Concept

Why this answer is correct

Exam Tip

(7a) में (a) का गुणांक क्या है?

Concept

Why this answer is correct

Exam Tip

(4p-9) में स्थिर पद कौन-सा है?

Concept

Why this answer is correct

Exam Tip

(2x+3x) का सरल रूप क्या है?

Concept

Why this answer is correct

Exam Tip

(9y-4y) का मान क्या होगा?

Concept

Why this answer is correct

Exam Tip

(x+x+x+x) किसके बराबर है?

Concept

Why this answer is correct

Exam Tip

यदि (x=6) हो तो (x+8) का मान क्या होगा?

Concept

Why this answer is correct

Exam Tip

यदि (a=5) हो तो (3a) का मान क्या है?

Concept

Why this answer is correct

Exam Tip

(2m+7) में कितने पद हैं?

Concept

Why this answer is correct

Exam Tip

\(5x^2\) किस प्रकार का बीजीय व्यंजक है?

Concept

Why this answer is correct

Exam Tip

(p+q) किस प्रकार का व्यंजक है?

Concept

Why this answer is correct

Exam Tip

(a+b+c) में पदों की संख्या कितनी है?

Concept

Why this answer is correct

Exam Tip

\(2x^2+3x+1\) की घात क्या है?

Concept

Why this answer is correct

Exam Tip

(8) को बीजीय रूप में किस प्रकार माना जाएगा?

Concept

Why this answer is correct

Exam Tip

(6x) और (6y) कैसे पद हैं?

Concept

Why this answer is correct

Exam Tip

(4a) और (-2a) कैसे पद हैं?

Concept

Why this answer is correct

Exam Tip

(10z) का संख्यात्मक गुणांक क्या है?

Concept

Why this answer is correct

Exam Tip

\(x^2\cdot x^3\) का सरल रूप क्या है?

Concept

Why this answer is correct

Exam Tip

\(\frac{x^6}{x^2}\) का सरल रूप क्या है?

Concept

Why this answer is correct

Exam Tip

((x)0) का मान क्या है जब \(x\neq0\)?

Concept

Why this answer is correct

((x)⁰) का मान क्या है जब \(x\neq0\)?

(m^-4=9) में (m) का मान क्या है?

((a+b)²) का सूत्र क्या है?

((a-b)²) का सही विस्तार कौन-सा है?