If 9th term of an A.P. is zero, prove that its 29th term is double the 19th term.

The 7th term of an A.P. is zero. Prove that 25th term is twice the 16th term.

If 7 times the 7th term of an A.P. is equal to 11 times its 11th term, show that the 18th term of the A.P. is zero.

The 6th term of an A.P. is 12 and the 8th term is 22, Find the 10th term.

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

If 5 times the 5^(th) term of an A.P. is equal to 7 times the 7^(th) term, find its 12^(th) term.

If (p+q)^(th) term of an A.P. is m and (p-q)th term is n, then the pth term is:

The 10th term of an A.P. is 52 and the 16th term is 82. Determine the 32nd term.

The first term of an A.P. is -4 and 10th term is 14. Determine the 30th term.

5th term of a G.P. is 2, then the product of first 9 terms is: