Math, asked by preksha9634, 10 months ago

sum of first 3 terms of AP is 57 and sum of last 3 terms is 246 .find n if d= 7

Answers

Answered by manjunpai2000

Answer:

There are total 12 terms in this A.P

Attachments:

preksha9634: but i get 21 and my friend gets 8

manjunpai2000: why

manjunpai2000: then the right answer do you have in answer key

preksha9634: thanks a lot

manjunpai2000: is it correct

preksha9634: yes absolutely correct

manjunpai2000: ohk

Answered by Anonymous

hey there

refer to attachment

Attachments:

preksha9634: thanks so much.....

Anonymous: ur welcome

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