MathematicsEasy178×since 2002Q5190Let Tr{{T_r}}Tr be the rth term of an A.P. whose first term is a and common difference is d. If for some positive integers m, n, m≠n, Tm=1n and Tn=1m, m \ne n,\,\,{T_m} = {1 \over n}\,\,and\,{T_n} = {1 \over m},\,m=n,Tm=n1andTn=m1, then a - d equalsA1m+1n{1 \over m} + {1 \over n}m1+n1B1C1m n{1 \over {m\,n}}mn1D0Check answerSkip