Math, asked by sritextile2111, 10 months ago

In an ap an=20 and sn=399 find sn-1

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Answered by Umachandru238

5

Answer:

your answer is in the below attachment!!!

if it helps u click on THANKS❤️

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Answered by adeeladilu2

3

ur answer is attached above....

stay safe ND have a nice day.....

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