Math, asked by sunilpotdar6851, 1 year ago

If the sum of n terms of an ap is 136 and common difference is 4 . If last term is 31 find no. Of terms

Answers

Answered by ash6129

2

sn=136

d=4

tn=31

sn=n÷2 (2a+n-1×d)

136=136÷2 (2a+31-1×4)

=68×240

=16,320

Answered by Chimiom

0

Answer:

Step-by-step explanation:

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