Math, asked by alpeshnarola82, 7 months ago

if sum of 1st 7 term of AP
is 49 and that of 17 term is 280 find sum of 1st n term​

Answers

Answered by harshsawant2232005
1

Step-by-step explanation:

If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms. Here S7 = 49, S17 = 289 Let 'a' be the first term and 'd' the common difference.

hope it helps

Answered by studyhard2005
0

Answer:

n²

Step-by-step explanation:

Explanation already attached....

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