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 10 February 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 solution. 
