Find the indicated term (or terms) in each of the following sequences : `2,-1/4,1/(32),……T_15`

Find the number of terms in each of the following APs :- 18, 15 1/2 ,13…., -47 .

Find the indicated term(s) of the following A.P.' s : -1,-2-3,-4, .........., t_100 .

Find the sums of the indicated number of terms of the following geometric progressions : 2,-1/2,1/8 , ........., n terms, 12 terms.

Find the sums of the indicated number of terms of the following geometric progressions : 1,1/3,1/9 .........., n terms, 5 terms.

Find the indicated term(s) of the following G.P.'s : 12, 8, 16/3, ………….., t_(6), t_(10) .

Find the sum of indicated number of terms of the following A.P.’s : -1, 1/4, 3/2 , ....... , 81 terms.

Find the indicated terms in the following : a= 1, r= 1.2 , t_4, t_n .

Find the sum of indicated number of terms of the following A.P.’s : 5, 2, -1, - 4, -7, ......., n terms.

Find the inverse of each of the following matrices: {:[(-1,5),(-3,2)]