There is a bag containing 16 green marbles, 14 blue marbles and 13 red marbles. what is the least amount of marbles that i must pick out to be sure that i got 3 different colours?

31

Step-by-step explanation:

In order to guarantee that you get 3 colors, you much choose a number that exceeds the number of marbles of the most prevalent 2 colors.

That is, you could choose 30 marbles and only end up with 16 green and 14 blue. To guarantee that you also choose a red, you must choose 31 marbles.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

44

step-by-step explanation: