1.

Let T be the rth term of an A.P. whose first term is a and conmon difference is d. If for some positive integers m ,n,T_(n)= (1)/(m) , T_(m) = (1)/(n)then (a – d) equals

Answer»


`1`
`0`
`(1)/(m) +(1)/(N) `

ANSWER :C


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