Question

The sixth term of a H.P. is 1/61 and the 10th term is 1/105. The first term of the H.P. is-

• A. 1/39
• B. 1/28
• C. 1/17
• D. 1/6

Answer 1

Answer: (D)

1/6

Answer 2

$\frac { 1 } { a + 5 d }$ = $\frac { 1 } { 61 }$ and $\frac { 1 } { a + 9 d }$ = $\frac { 1 } { 105 }$

a + 5d = 61, a + 9d = 105; After solving, we get a = 1/6