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

Find the nth terms of the following sequences. 2,4,6,8,….

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

Find the sum of the following series (1)+(2+3)+(4+5+6)+(7+8+9+10)+…to n terms.

The series of natural number is divided into groups as follows , (1), (2,3),(4,5,6),(7,8,9,10) and so on. Find the sum of the number in the nth group is

Find the mean of the following data 1,2,3,4,5,6,7,8,9 and 10

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

Find the sum to infinity of the following arithmetic geometric sequence. 1, 4/3, 7/9, 10/27 ……

Find the 5th and nth terms of the sequence [1, 4, 9, 16,….].

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),…………..