MATHS STORT TRIK
Sum of n natural numbers
-> The sum of first n natural
numbers = n (n+1)/2
-> The sum of squares of first n
natural numbers is
n (n+1)(2n+1)/6
-> The sum of first n even numbers=
n (n+1)
-> The sum of first n odd numbers=
n^2
-- solanki Mahipalsinh
B.sc ( Maths)
