The first term of a harmonic is 17 and the second term is 19. The 12th term is
1/19
1/29
1/17
1/27
Here first term of A.P. be 7 and second be 9, then 12th term will be 7 + 11 ×2 = 29
Hence 12th term of the H.P. be 129.
The 12th term of the A.P. with first term 1/2 and common difference 1/12 is …