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

If the qth term of an A.P is twice the pth term and rth term is twice the qth term. prove that 2p+r=3q

If the qth term of an A.P. is twice the pth term and rth term is twice the qth term. Prove that -2p+r=3q

the 6th term of an A.P. is -10 and its 10th term -26 determine the 15 term of the A.P.

The sum of the first term and pth term of an A.P. is zero. Show that the ((p+1)/2) th term is zero.

The pth term of an A.P. is twice the qth term. Again the sum of qth and rth term is 2. Prove that the pth term is frac(4(q-p))(3q-2p-r)

The pth term of an A.P. is q and qth term is p . Show that the nth term is p+q-n .

Find the 31st term of an AP whose 11th term is 38 and the 16th term is 73.

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

The pth term of an A.P. is —q and qth term is -p. If the nth term is zero, find n.

In a certain A.P., the 24th term is twice the 10th term. Prove that 72th term is twice of 34th term.