[" 29+h and last terms of an A.P are "7(3)/(4)" ,"1],[(1)/(2)" respetively.Find the first term and the "],[" of termen "137" ."]

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.

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

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 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.

The first and last terms of an A.P. are 1 and 7 . If the sum of its terms is 36 , then the number of terms will be

The first and last terms of an A.P. are 1 and 7 . If the sum of its terms is 36 , then the number of terms will be

If the first and the last terms of an A.P. are -4 and 146 respectively and the sum of this A.P. is 7171 then its common difference is

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