Problem 20. Summing digits

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Matrix Manipulation III

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Tough Stuff

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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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53.8% Correct | 46.2% Incorrect

• 16073 Solutions
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Last Solution submitted on Apr 23, 2025

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