Problem 20. Summing digits
Given n, find the sum of the digits that make up 2^n.
Example:
Input n = 7 Output b = 11
since 2^7 = 128, and 1 + 2 + 8 = 11..
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3 older comments
Ned Gulley
on 27 Jan 2012
The test suite was broken, as many of you suspected. I fixed it and rescored the problems.
Gareth Thomas
on 19 Oct 2014
I like this problem:)
Da Lu
on 6 Feb 2018
very interesting problem
Majid Farzaneh
on 17 May 2018
Good
Syed Shahed
on 2 May 2020
The test case 3 is totally wrong. It needs immediate correction. The code maker didn't notice that b=25 is a number not a single digit. If you're doing the sum of digits it always ends up with a single digit, it will never end up with number cause number itself is carrying multiple digits.
AMAR GAIKWAD
on 26 Jun 2020
Just for the badge ; )
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