Question

Write a program to print 3,6,12,24.....n using for loop

Answer 1

Sum of the series (1*2) + (2*3) + (3*4) + …… upto n terms

Given a value n, the task is to find sum of the series (1*2) + (2*3) + (3*4) + ……+ n terms

Examples:

Input: n = 2 Output: 8 Explanation: (1*2) + (2*3) = 2 + 6 = 8 Input: n = 3 Output: 20 Explanation: (1*2) + (2*3) + (2*4) = 2 + 6 + 12 = 20