Math, asked by anandachesuresh1, 6 months ago

let an be an A.P.If a1=15 and d=4,determine
the sum of the first 6 elements with even indexes

Answers

Answered by saitama5260007

0

Step-by-step explanation:

it's contradictory statement..

Answered by bunnu17

0

Answer

150

explanation

by using the formula

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

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