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The first term and the mth term of a geo...

The first term and the mth term of a geometric progression are `a and n` respectively and its nth term is `m`. Then its `(m+1-n)`th term is _____.

A

`(ma)/(n)`

B

`(na)/(m)`

C

`mna`

D

`(mn)/(a)`

Text Solution

Verified by Experts

The correct Answer is:
B
(i) Use the formula to find `n`th term of a GP.
(ii) `ar^(m-1) = n,ar^(n-1) =m`.
(iii) `(m+1 -n)`th term =`ar^(m-n)`
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