[" 2.The first term of an A.P.is "5" and the last term is "45." If the sum of all the "],[" terms is "400" ,the number of terms is "]

The first term of an A.P. is 5 and the last term is 45. If the sum of all the terms in 400. the number of terms is

First term of an A,P is -5 and its last term is 45 If the sum of these terms is 120 find the number of terms.

The first term of an AP is -5 and the last term is 45. If the sum of the terms of the AP is 120, then find the number of terms and the common difference.

The first term of an AP is - 5 and the last term is 45 . If the sum of the terms of the AP is 120 , then find the number of terms and the common difference.

The first term of an A.P.is 2 and the last term is 50. the sum of all these terms are 442. Find the common difference.

The first term of an A.P.is 2 and the last term is 50. the sum of all these terms are 442. Find the common difference.

The first term of an A.Pis 2and the last term is the sum of all these terms is 442. Find the common difference.

The first term of an A.P. is 5, the last term is 45 and the sum of its terms is 1000. Find the number of terms and the common difference of the A.P.

The first term of an A.P. is 3, the last term is 83 and the sum of all its terms is 903. Find the number of terms and the common difference of the A.P.

In an A.P., the first term is 3 and the last term is 17. The sum of all the terms in the sequence is 70. Then the number of terms in the arithmetic sequence is