Find the missing term in the given AP
5, _, _,`9 1/2`

Find the sum to 25 terms of the A.P. 5, 7, 9, 11, …

Find the sum of terms of the A.P: 4, 9, 14,…., 89.

Find the sum to n term of the A.P. 5,\ 2,\ -1,\ -4,\ -7,\ dot,

Find the 9th and pth terms of the A.P. 2,5,8.

Find the sum of first n term of the A.P., whose nth term is given by (2n+1).

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

Find the number of terms of the A.P. -12 ,\ -9,\ -6,\ dot,\ 12 . If 1 is added to each term of this A.P., then find the sum of all terms of the A.P. thus obtained.

Find the 10th term from the end of the A.P. . 5+9+13...+93.

Find the number of terms common to the two AP's 3,7,11,15.... 407 and 2, 9 ,16.......709.