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

(6 points)

This problem is for grade 9 students only.

Deadline expired on 10 November 2015.

Statistics on problem K. 473.
 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 solution.

• Problems in Mathematics of KöMaL, October 2015

•  Támogatóink: Morgan Stanley