The 9th term of the A.P. is 499 and the 499th term is 9. Which term of this A.P. is zero ?

The 5th term of an A.P. is 11 and the 9th term is 7. Find the 16th term.

The 11th term of an A.P. is 16 and the 21st term is 29 . Find the 16th term of this A.P.

The 9^(th) term of an A.P is 449 and 449^(th) term is 9 . The term which is equal to zero is .

If the 3^(rd) and the 9^(th) terms of an A.P. are 4 and -8 respectively ,which term of thi A.P. is zero ?

If the 3^(rd) and the 9^(th) terms of an A.P are 4 and -8 respectively, which term of this A.P is zero?

The first term of an A.P. is 5 and its 100th term is - 292. Find the 50th term of this A.P.

The first term of an A.P. is 5 and 100th term is - 292. Find the 50th term of the A.P.

If 7th term of an A.P. is 9 and 9th term of the A.P. is 7, then 20th term of the A.P. is