" (v) "1+5+12+22+...

6 4 6 12 22 ?

Find the variance and standard deviation for the following distribution: X:, 4.5, 14.5, 24.5, 34.5, 44.5, 54.5, 64.5 f: , 1, 5, 12, 22, 17, 9, 4

Find the variance and standard deviation for the following distribution: X:, 4.5, 14.5, 24.5, 34.5, 44.5, 54.5, 64.5 f: , 1, 5, 12, 22, 17, 9, 4

Find the variance and standard deviation for the following distribution: X:, 4.5, 14.5, 24.5, 34.5, 44.5, 54.5, 64.5 f: , 1, 5, 12, 22, 17, 9, 4

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

22 10 8 12 40 ?

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

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