Math, asked by firdouxsbhat, 1 year ago

Given A=6 d =6 n=40 find sn

Answers

Answered by teju7121

1

sn=n/2(2a+(n-1)d
substitute values,we get
sn=40/2(12+39)6
sn=20×51×6
sn=6120

firdouxsbhat: i m not satisfy to this

firdouxsbhat: is it right

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