Math, asked by ananyamp17, 2 months ago

calculate the sum of 20 terms of the AP 190,167,144....

Answers

Answered by jayagopalan

1

Answer:

Given a=190,d=167-190=-23,n=20

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

s20=20/2[2(190)+19x-23]

=10[380-437]

=-570

Step-by-step explanation:

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