Math, asked by AsthaPattani, 5 months ago

the sum of first 20 terms of AP 5 13 21 is

Answers

Answered by ashounak

17

Answer:

157

Hope it helps.

Plz mark branliest.

Step-by-step explanation:

a=5

d=13-5=8

n=20

Sn= a+ (n-1)d

=5 + (20-1)8

=5 + 19×8

=5 + 152

=157

157 is your answer

Answered by ksashwinkumar81

27

Step-by-step explanation:

the answer is in the attachment

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