अनुक्रम \(1,4,9,16,\ldots\) में (15)वें पद और (14)वें पद का अंतर कितना है?
In the sequence \(1,4,9,16,\ldots\), what is the difference between the (15)th term and the (14)th term?
Explanation opens after your attempt
C. (29)
Concept
The difference is (152-142=(15-14)(15+14)=29). Exam tip: use the identity \(a^2-b^2\).
Why this answer is correct
The correct answer is C. (29). The difference is (152-142=(15-14)(15+14)=29). Exam tip: use the identity \(a^2-b^2\).
Exam Tip
वर्गों के अंतर में (152-142=(15-14)(15+14)=29) होता है। परीक्षा में \(a^2-b^2\) का सूत्र याद रखें।
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