The 2 nd,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 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 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 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.

If the 4th and the 7th terms of an H.P. are 1/2 and 2/7 respectively . Find the first term.

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.

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

The 26th,11 th and last term of an A.P.are 0,3,-(1)/(5) respectively.Find the common difference and the number of terms

If the 11^(th) and 21^(st) terms of an H.P are 1/16 and 1/29 respectively find the 31^(st) term of the H.P.

The first term and the last term of an A.P. are 2 and 29, respectively. If the sum of the series is 155, find the number of terms and common difference.