Find the sum in the `n^(th)` group of sequence, `(1), (2, 3); (4, 5, 6, 7); (8, 9,...... 15);.........`

Find the sum in the nth group of sequence, (I 1,(2,3),(4,5,6,7),(8,9,………15),……………….. (ii) (1),(2,3,4),(5,6,7,8,9),…………..

Find the sum of the numbers in the nth bracket of the following sequence : (1), (2, 3), (4, 5, 6), (7, 8, 9, 10),….

The n^(th) term of the sequence 1/2,3/4,7/8,15/16,... is

Find the n^th term of the sequence 12,7,2,-3,-8,…..

Write the n^(th) term of the following sequences. 1/2,3/4,5/6,7/8,9/10,...

Find the n^th term of the sequence 5,2,-1,-4,-7,…

The n^(th) term of the sequence 1/2, 3/4, 7/8, 15/16 is ...................

Find the sum of the sequence -8, -5, -2 ,... 7

Find the n^(th) term in the following sequence: 3,6,9,12,….