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number-400 MCQ Questions for Class 10

number-400 se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with number-400.

Question 1/2 Easy Mathematics Chapter 1: Real Numbers 3: Prime factorisation Class 10 Level 8

यदि किसी संख्या का अभाज्य गुणनखंडन \(2^4\times5^2\) है, तो वह संख्या कौन सी है?

If the prime factorisation of a number is \(2^4\times5^2\), which number is it?

Explanation opens after your attempt
Correct Answer

A. 400

Step 1

Concept

Calculate \(2^4=16\) and \(5^2=25\).

Step 2

Why this answer is correct

\(16\times25=400\).

Step 3

Exam Tip

Finding powers first makes the calculation easier. चरण 1: \(2^4=16\) और \(5^2=25\) निकालें। चरण 2: \(16\times25=400\)। चरण 3: घातों का मान पहले निकालना आसान रहता है।

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Question 2/2 Easy Mathematics Chapter 1: Real Numbers 3: Prime factorisation Class 10 Level 8

संख्या 400 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 400?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

Write \(400=16\times25\).

Step 2

Why this answer is correct

\(16=2^4\) and \(25=5^2\), so \(400=2^4\times5^2\).

Step 3

Exam Tip

Composite forms like 20 or 10 are not final answers. चरण 1: \(400=16\times25\) लिखें। चरण 2: \(16=2^4\) और \(25=5^2\), इसलिए \(400=2^4\times5^2\)। चरण 3: 20 या 10 जैसे संयुक्त रूप अंतिम उत्तर नहीं होते।

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