Math, asked by aashvimodh4, 1 month ago

For an AP, if an=6n+5 then find sn.

Answers

Answered by 9caddityaawasthi2812

2

Answer:

I m new here I don't know anything pls. help

Answered by manaschauhan26

3

Answer:

an = n/2 (a+l)

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