18.1+5+12+22+35+

Find the sum of 1 + 5 + 12 + 22 + 35 +….upto n term.

Find the sum of n terms of each of the following 1 +5 + 12 + 22+ 35+ …….

If 1+ 5+ 12+ 22 + 35+ ….. + to n terms = ( n^(2) (n+1) )/(2) then n^( th) term of L.H.S is

The n^(th ) term of the series 1+5+12+22+35+.. ..

Find the sum of the following series : 1+5+12+22+35+…. to n terms.

it [[1.1, -22.1, -35.4, -9]]

Observe the series and figure out the pattern used to form it. What will be the 3rd term of the series? 1, 5, ____, 22, 35

If cos theta = 4//5 , " then " (sec theta + cosec theta) = A. 7/5 B. 15/12 C. 35/12 D. 12/5

Find the sum to n terms of the series: 1+5+12+22+35+...