Question

Let Tr be the rth term of an Ap for r=1,2,3....if fr some positive integers m ,n we have Tm =1/n

Answer 1

Question is incomplete. Here is the complete question.

Let Tr be the rth term of an AP whose first term is a abd common difference is d is some positive integers m ,n ,m not equal to n , Tm=1÷n , Tn =1÷m then find the value of a-d?

Answer:

Tm = 1/n

Hence

a + (m-1) d = 1/n

Similarly

a + (n-1) d = 1/m

Now solve both the equations

d = 1/mn

Hence a = 1/mn

Now a-d = 0