Find the sum of the first 15 terms of each of the following sequences having `n t h` term as `x_n=6-n` (ii) `y_n=9-5n`

Find the sum of the first 15 terms of each of the following sequences having n t h term as (i) x_n=6-n (ii) y_n=9-5n

Find the sum of the first 15 terms of each of the following sequences having nth term as x_(n)=6-n( ii )y_(n)=9-5n

Find the sum of the first 15 terms of each of the following sequences having n t h term as (i) a_n=3+4n (ii) b_n=5+2n

Find the sum of the first 15 terms of each of the following sequences having nth term as a_(n)=3+4n( ii b_(n)=5+2n

Find the first five terms of the following sequence whose n^(th) term is a_n = 5n + 3

Write the first five terms of each of the following sequences whose nth terms are: (i) a_(n)=2^(n) (ii) T_(n)=(n(n+1)(2n+1))/6

Find the sum of the first n terms of the arithmetic sequence 1/n,3/n,5/n,7/n ,.......

Write the indicated terms in each of the following sequences whose nth terms are: t_n= n(n+2): t_5, t_7

Find the indicated terms in each of the following sequences whose nth nth terms are: t_n=(-1)^(n-1)t^(n-1),t_3

Write the indicated terms in each of the following sequences whose nth terms are: t_n=n^2(n+1): t_4, t_5