The `2^(nd),31^(st)` and last terms of an A.P. are `7 3/4, 1/2` and `-6 1/2` respectively. Find the first term and the number of terms in the A.P

The 2nd, 31st and last terms of an A.P. are 7 3/4, 1/2 and -6 1/2 respectively, find the first term and the number of terms.

The 2nd, 31st and last term of an A.P. are 7(3)/(4) , (1)/(2) and -6(1)/(2) respectively. Find the first term and the number of terms.

4.If the first and last terms of an A.P.are 1 and 11 respectively and the sum of its terms is 30. find the number of terms in the A.P.

If the 3rd and 7th terms of an A.P. are 17 and 27 respectively . Find the first term of the A.P.:

The 2nd,31st and the last terms of an AP are 5 and -3 respectively. Find the AP and its 30th term.

Suppose that the first and the 5^(th) terms of an A.P. are-14 and 2 respectively If the sum of the terms of the A.P is 40, find the number of terms in the A.P.

If 6^(th) term and 8^(th) term of an A.P. are 12 and 22 respectively, then find its 2^(nd) term.

The first and last terms of an A.P. are - 7 and 233 and the sum of the A.P. is 9153. Find the number of terms in the A.P.:

The common difference, last term and sum of terms of an A.P. are 4, 31, and 136 respectively. Find the number of terms.