Let \[{{T}_{r}}\] be the \[{{r}^{th}}\] term of an A.P. for \[r=1,\ – McqOptions

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1.	Let \[{{T}_{r}}\] be the \[{{r}^{th}}\] term of an A.P. for \[r=1,\ 2,\ 3,....\]. If for some positive integers \[m,\ n\] we have \[{{T}_{m}}=\frac{1}{n}\] and \[{{T}_{n}}=\frac{1}{m}\], then equals [IIT 1998]
A.	\[\frac{1}{mn}\]
B.	\[\frac{1}{m}+\frac{1}{n}\]
C.	1
D.	0
Answer» D. 0

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