ALGEBRA - Important formula
Sum of first n natural numbers = n (n+1)/2
Sum of the squares of first n natural numbers
= n(n+1)(2n+1)/6
Sum of the cubes of first n natural numbers =
[n(n+1)/2]^2
Sum of first n natural odd numbers = n^2
Average = (sum of items)/ (number of items)
Li...mahipalsinh solanki
