Question

You have 40 balls in a bag: 15 identical blue, 12 identical black, and 13 identical red. You are not allowed to look inside the bag. How many balls must you take out from the bag to be sure that 100 percent you get one blue ball?

40

15

12

26

Answer 1

You have to take out 26 of the balls

Answer 2

To have at least one blue ball you mush take out 26 of the balls.