कौन सा क्रम \(a_n=7n^2\) से बनता है?
Which sequence is formed by \(a_n=7n^2\)?
Explanation opens after your attempt
B. (7,28,63,112)
Concept
Putting (n=1,2,3,4) gives (7,28,63,112). Multiply \(n^2\) by (7).
Why this answer is correct
The correct answer is B. (7,28,63,112). Putting (n=1,2,3,4) gives (7,28,63,112). Multiply \(n^2\) by (7).
Exam Tip
(n=1,2,3,4) रखने पर (7,28,63,112) मिलते हैं। \(n^2\) को (7) से गुणा करें।
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