Question

Two ways to find the sum of all terms of an AP
urgent..............

Answer 1

Step-by-step explanation:

question is :-

find the sum of first 200 terms appearing in both the A P. 1) 17, 21, 25, ........... 2) 16, 21, 26, ........... If certain nos. appears in both the A.P.s

I searched everywhere, but i only found how to find no. of common terms but not their sum. Even this question has never been asked on this site before.

How to go about solving this question? Please help me.

Thanks.

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Answer 2

Step-by-step explanation:

Bro,I only know this way and it is the easiest way to find sum in an A.P.