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If the sum of the first \(n\) positive odd integers is \(n^2,\) what is the sum of all odd numbers from \(25\) to

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If the sum of the first \(n\) positive odd integers is \(n^2,\) what is the sum of all odd numbers from \(25\) to

by AAPL » Fri Dec 15, 2023 7:13 am

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If the sum of the first \(n\) positive odd integers is \(n^2,\) what is the sum of all odd numbers from \(25\) to \(79?\)

A. \(39^2-11^2\)
B. \(39^2-12^2\)
C. \(40^2-12^2\)
D. \(79^2-22^2\)
E. \(40^2-11^2\)

OA C
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