Concept-wise Practice

three-numbers MCQ Questions for Class 10

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

Practice Questions

39 questions tagged with three-numbers.

Question 31/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 11

(18), (27) और (45) का महत्तम समापवर्तक क्या होगा?

What will be the HCF of (18), (27), and (45)?

Explanation opens after your attempt
Correct Answer

C. (9)

Step 1

Concept

\(18=2\times3^2\), \(27=3^3\), and \(45=3^2\times5\).

Step 2

Why this answer is correct

The common prime factor is (3), and the smallest power is \(3^2\).

Step 3

Exam Tip

\(3^2=9\), so the answer is (9). चरण 1: \(18=2\times3^2\), \(27=3^3\) और \(45=3^2\times5\)। चरण 2: तीनों में समान अभाज्य गुणनखंड (3) है और छोटी घात \(3^2\) है। चरण 3: \(3^2=9\), इसलिए उत्तर (9) है।

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Question 32/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 11

(15), (25) और (35) का लघुत्तम समापवर्त्य क्या है?

What is the LCM of (15), (25), and (35)?

Explanation opens after your attempt
Correct Answer

C. (525)

Step 1

Concept

\(15=3\times5\), \(25=5^2\), and \(35=5\times7\).

Step 2

Why this answer is correct

The highest powers are (3), \(5^2\), and (7).

Step 3

Exam Tip

\(3\times25\times7=525\), so the LCM is (525). चरण 1: \(15=3\times5\), \(25=5^2\) और \(35=5\times7\)। चरण 2: बड़ी घातें (3), \(5^2\) और (7) हैं। चरण 3: \(3\times25\times7=525\), इसलिए लघुत्तम समापवर्त्य (525) है।

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Question 33/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 11

(15), (25) और (35) का महत्तम समापवर्तक क्या है?

What is the HCF of (15), (25), and (35)?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

\(15=3\times5\), \(25=5^2\), and \(35=5\times7\).

Step 2

Why this answer is correct

The common prime factor in all three numbers is (5).

Step 3

Exam Tip

Therefore, the HCF is (5). चरण 1: \(15=3\times5\), \(25=5^2\) और \(35=5\times7\)। चरण 2: तीनों में समान अभाज्य गुणनखंड (5) है। चरण 3: इसलिए महत्तम समापवर्तक (5) है।

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Question 34/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

(25), (40) और (50) का लघुत्तम समापवर्त्य क्या है?

What is the LCM of (25), (40), and (50)?

Explanation opens after your attempt
Correct Answer

B. (200)

Step 1

Concept

\(25=5^2\), \(40=2^3\times5\), and \(50=2\times5^2\).

Step 2

Why this answer is correct

The highest powers are \(2^3\) and \(5^2\).

Step 3

Exam Tip

\(8\times25=200\), so the LCM is (200). चरण 1: \(25=5^2\), \(40=2^3\times5\) और \(50=2\times5^2\)। चरण 2: बड़ी घातें \(2^3\) और \(5^2\) हैं। चरण 3: \(8\times25=200\), इसलिए लघुत्तम समापवर्त्य (200) है।

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Question 35/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

(25), (40) और (50) का महत्तम समापवर्तक क्या है?

What is the HCF of (25), (40), and (50)?

Explanation opens after your attempt
Correct Answer

A. (5)

Step 1

Concept

\(25=5^2\), \(40=2^3\times5\), and \(50=2\times5^2\).

Step 2

Why this answer is correct

The common prime factor in all three numbers is (5).

Step 3

Exam Tip

The smallest power is (5), so the HCF is (5). चरण 1: \(25=5^2\), \(40=2^3\times5\) और \(50=2\times5^2\)। चरण 2: तीनों में समान अभाज्य गुणनखंड (5) है। चरण 3: छोटी घात (5) है, इसलिए महत्तम समापवर्तक (5) है।

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Question 36/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

(16), (24) और (40) का लघुत्तम समापवर्त्य क्या होगा?

What will be the LCM of (16), (24), and (40)?

Explanation opens after your attempt
Correct Answer

C. (240)

Step 1

Concept

\(16=2^4\), \(24=2^3\times3\), and \(40=2^3\times5\).

Step 2

Why this answer is correct

Take the highest powers \(2^4\), (3), and (5).

Step 3

Exam Tip

\(16\times3\times5=240\), so the LCM is (240). चरण 1: \(16=2^4\), \(24=2^3\times3\) और \(40=2^3\times5\)। चरण 2: बड़ी घातें \(2^4\), (3) और (5) हैं। चरण 3: \(16\times3\times5=240\), इसलिए उत्तर (240) है।

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Question 37/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

(16), (24) और (40) का महत्तम समापवर्तक क्या होगा?

What will be the HCF of (16), (24), and (40)?

Explanation opens after your attempt
Correct Answer

B. (8)

Step 1

Concept

\(16=2^4\), \(24=2^3\times3\), and \(40=2^3\times5\).

Step 2

Why this answer is correct

The common prime factor is (2), and the smallest power is \(2^3\).

Step 3

Exam Tip

\(2^3=8\), so the HCF is (8). चरण 1: \(16=2^4\), \(24=2^3\times3\) और \(40=2^3\times5\)। चरण 2: तीनों में समान गुणनखंड (2) है और छोटी घात \(2^3\) है। चरण 3: \(2^3=8\), इसलिए महत्तम समापवर्तक (8) है।

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Question 38/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

(12), (18) और (30) का लघुत्तम समापवर्त्य क्या है?

What is the LCM of (12), (18), and (30)?

Explanation opens after your attempt
Correct Answer

D. (180)

Step 1

Concept

\(12=2^2\times3\), \(18=2\times3^2\), and \(30=2\times3\times5\).

Step 2

Why this answer is correct

Use the highest powers \(2^2\), \(3^2\), and (5).

Step 3

Exam Tip

\(4\times9\times5=180\), so the LCM is (180). चरण 1: \(12=2^2\times3\), \(18=2\times3^2\) और \(30=2\times3\times5\)। चरण 2: बड़ी घातें \(2^2\), \(3^2\) और (5) हैं। चरण 3: \(4\times9\times5=180\), इसलिए उत्तर (180) है।

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Question 39/39 Easy Mathematics Chapter 1: Real Numbers 4: HCF and LCM using prime factorisation Class 10 Level 10

(12), (18) और (30) का महत्तम समापवर्तक क्या है?

What is the HCF of (12), (18), and (30)?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

\(12=2^2\times3\), \(18=2\times3^2\), and \(30=2\times3\times5\).

Step 2

Why this answer is correct

The common prime factors in all three numbers are (2) and (3).

Step 3

Exam Tip

\(2\times3=6\), so the HCF is (6). चरण 1: \(12=2^2\times3\), \(18=2\times3^2\) और \(30=2\times3\times5\)। चरण 2: तीनों में समान गुणनखंड (2) और (3) हैं। चरण 3: \(2\times3=6\), इसलिए महत्तम समापवर्तक (6) है।

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