Problem C. 1332. (January 2016)
C. 1332. Vicky's grandma buys one lottery ticket per week. What is the probability that she will not win at all during the course of a whole year (in 52 weekly draws)? (In the lottery, 5 numbers are drawn out of 90. A ticket will win if at least 2 are marked out of the five numbers drawn.)
(5 pont)
Deadline expired on February 10, 2016.
Statistics:
163 students sent a solution. 5 points: 103 students. 4 points: 11 students. 3 points: 9 students. 2 points: 4 students. 1 point: 12 students. 0 point: 23 students. Unfair, not evaluated: 1 solutions.
Problems in Mathematics of KöMaL, January 2016