Concept-wise Practice

400 MCQ Questions for Class 10

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

Practice Questions

1 questions tagged with 400.

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

(400) का अभाज्य गुणनखंडन क्या है?

What is the prime factorisation of (400)?

Explanation opens after your attempt
Correct Answer

B. \(2^4 \times 5^2\)

Step 1

Concept

Write \(400=4 \times 100\).

Step 2

Why this answer is correct

\(4=2^2\) and \(100=2^2 \times 5^2\), so \(400=2^4 \times 5^2\).

Step 3

Exam Tip

(4) is not prime, so final factorisation must use only prime bases. चरण 1: \(400=4 \times 100\) लिखें। चरण 2: \(4=2^2\) और \(100=2^2 \times 5^2\), इसलिए \(400=2^4 \times 5^2\)। चरण 3: (4) अभाज्य नहीं है, इसलिए अंतिम रूप में केवल अभाज्य आधार लिखें।

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