Mathematical and Physical Journal
for High Schools
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Problem K. 473. (October 2015)

K. 473. What is the sum of the digits in the binary (base-2) representation of the product \(\displaystyle 2^{2015}\cdot 15\)?

(6 pont)

Deadline expired on November 10, 2015.


111 students sent a solution.
6 points:60 students.
5 points:21 students.
4 points:9 students.
3 points:7 students.
2 points:4 students.
1 point:4 students.
0 point:5 students.
Unfair, not evaluated:1 solutions.

Problems in Mathematics of KöMaL, October 2015