Math, asked by rajendrarajput3, 7 months ago

how many terms of the ap -6, -11/2, -5, -9/2.... are needed to give their sum 0.

Answers

Answered by piyushds14

9

Answer:

d=1/2

a=(-6)

sn= n/2 (2a + n-1) d

0= n/2(-12 +n-1)1/2

by solving

n=13

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