Math, asked by bhasitadasari9818, 9 months ago

What is the sum of the first 17 terms of an arithmetic progression if the first term is -20 and last term is 28?

A) 68 B) 156 C) 142 D) 242

Answers

Answered by skarankumar184

0

Answer:

B) 156 answer of this question

Answered by hrudhikasurendran

0

Answer:68

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

sn=17/2(-20+28)

=17/2×(8)

= 17×4

= 68

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