Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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# Problem B. 4728. (September 2015)

B. 4728. Let $\displaystyle e$ be the line of one of the edges of a cube. How many lines of the space intersect exactly those out of the 12 lines containing the edges of the cube which are skew relative to $\displaystyle e$?

(3 pont)

Deadline expired on October 12, 2015.

### Statistics:

 208 students sent a solution. 3 points: 113 students. 2 points: 32 students. 1 point: 53 students. 0 point: 5 students. Unfair, not evaluated: 5 solutionss.

Problems in Mathematics of KöMaL, September 2015