Problem 20. Summing digits

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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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Last Solution submitted on Feb 25, 2025

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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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Problem 20. Summing digits

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Last 200 Solutions

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Primes and Rough Numbers, Basic ideas

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Problem 20. Summing digits

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Last 200 Solutions

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Primes and Rough Numbers, Basic ideas

Problem Recent Solvers7721

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