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 solutions.

Problems in Mathematics of KöMaL, September 2015