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3 results found for "number-42" in Class 10.

Question Medium Mathematics Chapter 1: Real Numbers 3: Prime factorisation Class 10 Level 8

संख्या 4200 का सही अभाज्य गुणनखंडन क्या है?

What is the correct prime factorisation of 4200?

Explanation opens after your attempt
Correct Answer

A. \(2^3\times3\times5^2\times7\)

Step 1

Concept

Write \(4200=42\times100\).

Step 2

Why this answer is correct

\(42=2\times3\times7\) and \(100=2^2\times5^2\), so \(4200=2^3\times3\times5^2\times7\).

Step 3

Exam Tip

Count the powers of 2 and 5 carefully. चरण 1: \(4200=42\times100\) लिखें। चरण 2: \(42=2\times3\times7\) और \(100=2^2\times5^2\), इसलिए \(4200=2^3\times3\times5^2\times7\)। चरण 3: 2 और 5 की घातें ध्यान से गिनें।

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Question Easy Mathematics Chapter 1: Real Numbers 3: Prime factorisation Class 10 Level 7

किस संख्या का अभाज्य गुणनखंडन \(2\times3\times7\) है?

Which number has prime factorisation \(2\times3\times7\)?

Explanation opens after your attempt
Correct Answer

A. 42

Step 1

Concept

The prime factors are given.

Step 2

Why this answer is correct

\(2\times3\times7=42\).

Step 3

Exam Tip

When no power is written, each prime is taken once. चरण 1: अभाज्य गुणनखंड दिए गए हैं। चरण 2: \(2\times3\times7=42\)। चरण 3: जब घात न हो तो प्रत्येक अभाज्य एक बार लिया जाता है।

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Question Easy Mathematics Chapter 1: Real Numbers 3: Prime factorisation Class 10 Level 7

संख्या 42 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 42?

Explanation opens after your attempt
Correct Answer

A. \(2\times3\times7\)

Step 1

Concept

Write \(42=6\times7\).

Step 2

Why this answer is correct

\(6=2\times3\), so \(42=2\times3\times7\).

Step 3

Exam Tip

6 is composite, so do not keep it in the final answer. चरण 1: \(42=6\times7\) लिखें। चरण 2: \(6=2\times3\), इसलिए \(42=2\times3\times7\)। चरण 3: 6 संयुक्त है, इसलिए उसे अंतिम उत्तर में न रखें।

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