Solution

26226

Problem / game
Slick Summing Back to problem
First name
Nishil Bhavsar
School
Cambridge School
Country
India
Age
14

The formula to find summation of n consecutive numbers would be :

n(n-1)/2 + n

An example:

Lets n be 20 :

20(20-1)/2 +n

=190 + 20

=210