English, asked by justcallmedude05, 8 months ago

the sum of first 7 terms of an ap is 49 and that of its first 17 terms is 289 find the sum of the first 10 terms of an ap

Answers

Answered by yashtomar505

1

Answer:

a+6d=49and a+16d=289

Explanation:

do elimination of both equation

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