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Question

Find the median of the data a,ar,ar2,......arn where n is an odd number.

A
arn12
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B
a2(1r)rn+12
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C
a2(1+r)rn12
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D
a2(1r)rn12
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Solution

The correct option is B arn12
n is odd
Median is (n+12)th term
First term =a
Common ratio =r
tn+12=arn+121=arn12

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