In the following APs, find the missing terms in the boxes :

In the following A.P.'s, find the missing terms in the boxes.

If the 8th term of an A.P. is 37 and the 15th term is 15 more than the 12th find the A.P. Also find the sum of first 20 terms of this A.P.

The sum of first m terms of an A.P. is 4m^2-m . If its n t h term is 107, find the value of n . Also, find the 21 s t term of this A.P.

In an A.P. the third term is four times the first term, and the sixth term is 17 , find the series.

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.

In an AP, the sum of first ten terms is -150 and the sum of its next ten terms is -550 Find the AP

In an AP, the sum of first ten terms is -150 and the sum of its next ten terms is -550 Find the AP

The sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. If the sum first ten terms of this AP is 235, find the sum of its first twenty 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.