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

किस संख्या का अभाज्य गुणनखंडन \(2^4\times3\times5\times7\) है?

Which number has prime factorisation \(2^4\times3\times5\times7\)?

Explanation opens after your attempt
Correct Answer

A. 1680

Step 1

Concept

Calculate \(2^4=16\).

Step 2

Why this answer is correct

\(16\times3\times5\times7=1680\).

Step 3

Exam Tip

When there are four factors, multiply smaller products in order. चरण 1: \(2^4=16\) निकालें। चरण 2: \(16\times3\times5\times7=1680\)। चरण 3: चार गुणनखंड हों तो क्रम से छोटे गुणन करें।

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

संख्या 1680 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 1680?

Explanation opens after your attempt
Correct Answer

A. \(2^4\times3\times5\times7\)

Step 1

Concept

Write \(1680=16\times105\).

Step 2

Why this answer is correct

\(16=2^4\) and \(105=3\times5\times7\), so \(1680=2^4\times3\times5\times7\).

Step 3

Exam Tip

Change 105 into prime factors. चरण 1: \(1680=16\times105\) लिखें। चरण 2: \(16=2^4\) और \(105=3\times5\times7\), इसलिए \(1680=2^4\times3\times5\times7\)। चरण 3: 105 को अभाज्य गुणनखंडों में बदलें।

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