Recursion: Sum of Multiplication

Published by Werdna in
mathnumbersrecursion

Given a number, return the total sum of that number multiplied by every number between 1 and 10.

Examples

multi_sum(1) ➞ 55
# 1 x 1 + 1 x 2 + 1 x 3 ...... 1 x 9 + 1 x 10 = 55

multi_sum(6) ➞ 330
# 6 x 1 + 6 x 2 + 6 x 3 ...... 6 x 9 + 6 x 10 = 330

multi_sum(10) ➞ 550

multi_sum(8) ➞ 440

multi_sum(2) ➞ 110

Notes

Use recursion to solve this challenge.

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