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
Concept
\(5^2=25\) and \(7^2=49\).
Why this answer is correct
\(25\times49=1225\).
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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