If (`1^2 + 2^2 + 3^2 +` ……………… to 'n' terms) / ( 1.3 + 2.5 + 3.7 +……………. To 'n' terms) = 9/5 find 'n'.

If ( 1^2 + 2^2 + 3^2 + ……………… to 'n' terms) / ( 1.3 + 2.5 + 3.7 +……………. To 'n' terms) = 17/16 find 'n'.

If (2 + 4 + 6 + 8 + ……………… to 'n' terms) / ( 1 + 3 + 5 + 7 + ……………. To 'n' terms) = 20/19 find 'n'.

If (1 xx 2 + 2 xx 3 + 3 xx 4 + 4 xx 5+ … upto n terms) / (1 + 2 + 3 + 4 + ………………….. upto n terms) = 100 / 3 , find n

If (1xx3 + 2xx5 + 3xx7 + ….. upto n terms) / ( 1^3 + 2^3 + 3^3 + …… upto n terms) = 5/9, find the value of n.

If (1 + 2 + 3 + 4 + 5 +………..upto n terms) / ( 1xx2 + 2xx3 + 3xx4 + 4xx5 + …. upto n terms) = 3/22 Find the value of n

If (1 + 3 + 5 + 7 …. Up to n terms) / (2 + 4 + 6 + 8 +… up to n terms)= 0.95, find n.

1 + (1 +2) + (1 + 2 + 3) + …. To n term is

Find S_n , if S_n = 1.3 + 2.4 + 3.5 + … upto n terms.