Problem P. 3957. (February 2007)
P. 3957. Estimate the number of electrons which pass the cross section of the ring on the finger of the fan while he or she is waving on a rock-concert.
Deadline expired on March 12, 2007.
22 students sent a solution. 4 points: Dudás János, Pálovics Róbert, Székely Gergely, Varga Bonbien, Zsolczai Viktor. 3 points: Pásztor Ádám Viktor, Tóth 123 László, Tüzes Dániel. 2 points: 2 students. 1 point: 6 students. 0 point: 4 students. Unfair, not evaluated: 2 solutions.