The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, then find the number of terms.

The sum of the first four terms of an A.Pis 56. The sum of the last four terms is 112. If its first term is 11, then find the number of terms.

The sum of first four terms of an AP is 56. The sum of the last four terms is 112. If its first term is 11, then find the number of terms. Also find the sum of all terms of the AP.

The sum of the first four terms an A.P. is 56 . The sum the of the last four terms is 112. If its first terms is 11 then the number of terms is

The sum of the first 4 terms of an A.P. is 56. The sum of the last 4 terms is 112. If its first term is 11, then find the number of terms.

The sum of first four terms of an A.P. is 56 and the sum of it's last four terms 112. If its first term is 11 then find the number of terms in the A.P

The sum of first four terms of an A.P. is 56 and the sum of it's last four terms 112. If its first term is 11 then find the number of terms in the A.P

Let the sum of the first three terms of an A.P be 39 and the sum of its last four terms be 178. Ifthe first term of this A.P.is 10, then the medianof the A.P.is

The sum of four consecutive terms of an A.P. is 2. The sum of the 3rd and 4th terms is 11. Find the terms.