Math, asked by almasaysha0405, 6 months ago

if an=2n+5 then find s15

Answers

Answered by kekanshubham20

0

Answer:

write question correctly

Answered by manishchakworty007

3

Answer:

if n =1 then

2*1 + 5=7

similarly

n=5 so 2*5 + 5 =15

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