Math, asked by shanka6301, 10 months ago

What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?

A) 104 B) 140 C) 84 D) 98

Answers

Answered by hrudhikasurendran

0

Answer:A)104

Step-by-step explanation:sn=n/2(a+x_n)

sn=13/2(-10+26)

=13/2(16)

=13×8

=104

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