if (m+1)th, (n+1)th and (r+1)th term of ...

if `(m+1)th, (n+1)th and (r+1)th` term of an AP are in GP.and m, n and r in HP. . find the ratio of first term of A.P to its common difference

A

`-(2)/(n)`

B

`(2)/(n)`

C

`-(n)/(2)`

D

`(n)/(2)`

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The correct Answer is:

A

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