यदि किसी संख्या का अभाज्य गुणनखंडन \(5^2\times7^2\) है, तो वह संख्या कौन सी है?

If the prime factorisation of a number is \(5^2\times7^2\), which number is it?

Explanation opens after your attempt
Correct Answer

A. 1225

Step 1

Concept

\(5^2=25\) and \(7^2=49\).

Step 2

Why this answer is correct

\(25\times49=1225\).

Step 3

Exam Tip

Both powers are 2 in this square form, so multiply carefully. चरण 1: \(5^2=25\) और \(7^2=49\) हैं। चरण 2: \(25\times49=1225\)। चरण 3: वर्ग रूप में दोनों घातें 2 हैं, इसलिए गुणा साफ करें।

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यदि किसी संख्या का अभाज्य गुणनखंडन \(5^2\times7^2\) है, तो वह संख्या कौन सी है? / If the prime factorisation of a number is \(5^2\times7^2\), which number is it?

Correct Answer: A. 1225. Explanation: चरण 1: \(5^2=25\) और \(7^2=49\) हैं। चरण 2: \(25\times49=1225\)। चरण 3: वर्ग रूप में दोनों घातें 2 हैं, इसलिए गुणा साफ करें। / Step 1: \(5^2=25\) and \(7^2=49\). Step 2: \(25\times49=1225\). Step 3: Both powers are 2 in this square form, so multiply carefully.

Which concept should I revise for this Mathematics MCQ?

\(5^2=25\) and \(7^2=49\).

What exam hint can help solve this Mathematics question?

Both powers are 2 in this square form, so multiply carefully. चरण 1: \(5^2=25\) और \(7^2=49\) हैं। चरण 2: \(25\times49=1225\)। चरण 3: वर्ग रूप में दोनों घातें 2 हैं, इसलिए गुणा साफ करें।