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In `( m+1)`th, `( n + 1) `th, `( r + 1) ` th terms of an A.P. are in G.P. and m,n,r are in H.P., then ratio of the first term of the A.P. to its common difference interms of n is `:`

A

`( n )/( 2)`

B

`-(n )/( 2)`

C

`( n )/( 3)`

D

`- ( n )/( 3)`

Text Solution

Verified by Experts

The correct Answer is:
B
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