The 10th term of an A.P. is (-15) and the 31st term is (-57). Find the first term and common difference of the A.P.

The 4^(th) term of an A.P. is 14 and its 12^(th) term is 70 . What are first term and common difference ?

The 11th term of an A.P. is 80 and the 16th term is 110. Find the 31st term.

The first term of an A.P. is -3 and the 10th term is 15 Find S_(10).

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

The sum of the 3rd and 7th terms of an A.P. is 6 and their product is 8. Find the 1st term (a) and the common difference (d) of the A.P.

The first term of an A.P is -3 and the 10th term is 15 Find S_10 .

Suppose that the 6^(th) and 17^(th) terms of an A.P. are 19 and 41 respectively Find the first term and the common difference of the A.P.

In an A.P., 10th term is 23 and 32nd term is 67. Find the first term and the common difference.

The sum of 4th and 8th terms of an A.P. is 24 and the sum of the 6th and 10th terms is 34. Find the first term and the common difference of the A.P.

The sum of 4th and 8th terms of an A.P. is 24 and the sum of the 6th and 10th terms is 34. Find the first term and the common difference of the A.P.