Question

if mth term of Ap is n and nth term of an Ap is n find m+n th term

Answer 1

Hi the answer is zero
Please find the attachment
Hope this helps.

Answer 2

[tex]S_{m} = a + (m-1)d = n \\ S_{n} = a + (n-1)d = m \\ S_{m} - S_{n} = n - m = (m - n)d \\ d = \frac{n - m}{m - n} = -1 \\ S_{m} = a - m + 1 = n \\ a = n + m - 1 \\ S_{n+m} = a + (n+m-1)d = (n+m-1) - (n+m-1) = 0[/tex]