Alex chooses a number at random from the set {1, 2, 3, 4, 5}. Winnie also chooses a number at random from the same set. (They can choose the same number.) What is the probability that the product of their numbers is at least 4?
You could do complementary counting and see the ones that are not right.
1,2
1,3
2,1
And since the total ways are 25:
1(Because 25/25=1)-3/25(That are wrong)=22/25
Hope This Helps
+1286 
