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  • Find 4+12+36+… up to 6 termsOption: 1 1525Option: 2 1456<div class='qn

Find 4+12+36+… up to 6 terms

Option: 1

1525


Option: 2

1456


Option: 3

1320


Option: 4

1120


Answers (1)

best_answer

a=4,r=12/4=3,n=6

Here r>1. Hence,

S6=a(rn−1)r−1=4(36−1)3−1=4(729−1)/2=4×728/2=2×728=1456

Posted by

Deependra Verma

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