CBSE BOARD XII, asked by donaldjoseph, 1 year ago

If the 8th term of an A. P is 32, find the sum of the frist fithteen term of the A. P?

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Answered by udaykasturi

1

It is just basic simplification....
In the sum of first 15 terms I didn't mention taking 2 common from 2a+14d

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