36" ) Find the sum to n terms of the sequence,"8,88,888,8888

Find the sum to n terms of the series: 8, 88, 888 ,…..

Find the sum to n terms of the sequence 7,77,777,7777,…….

Find the sum to n terms of the sequence 4+44+444+…….

Find the sum of n terms of the following sequences: 8+88+888+……………..up to n terms.

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

n, 3n, 5n,... is an arithmetic sequence. a) What is the common difference? b) Prove that the sum of first 'n' terms of this sequence is n^(3) . c) Then find the sum of 15 terms of the sequence 15,45,75,…..

Find the sum of the sequence 8, 88, 888, 8888, . . . To n terms.

The algebraic form of an arithmetic sequence is 8n+7 . Find the sum of first 30 terms of this sequence.