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If s is the sum to infinity of a G.P., whose first term is a, then the sum of the first n terms of the G.P. is
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a
s1−1−asn
b
s1−asn
c
a1−1−asn
d
as1−1−asn
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Correct option is A
s=a1−r⇒1−r=as⇒r=1−asSn=a1−rn1−r=aa/s1−1−asn=s1−1−asnSimilar Questions
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