The fourth term of an AP is 10 times the first. Prove that the sixth term is four times the second.

The fourth term of an A.P. is ten times the first. Prove that the sixth term is four times as greater as the second term.

The 5th term of an A.P. is three times the first term. Prove that its 7th term will be two times the 3rd term.

The 5th term of an A.P. is three times the first term. Prove that its 7th term will be two times the 3rd term.

The fourth term of an A.P. is equal to 3 times the first term, and the seventh term exceeds twice the third term by 1. Find the first term and the common difference.

(i) 6 times the 6th term of an A.P. is equal to 10 times the 10th term. Prove that its 16th term will be zero. (ii) 10 times the 10th term of an A.P. is equal to 15 times its 15th term. Find its 25th term.

The fourth term of an A.P. is equal to 3 times the first term and seventh term exceeds twice the third term by 1. find the first term and the common difference.

The 4th term of an A.P. is three times the first and the 7th term exceeds twice the third term by four. Find the first term and the common difference.

The 7^(th) term of an A.P. is 5 times the first term and its 9^(th) term exceeds twice the 4^(th) term by 1 . The first term of the A.P. is

The 9th term of an AP is equal to 6 times the second term. If its 5th term is 22 find the AP.