Mathematics

Bob

27 April, 00:32

You are randomly drawing marbles from a bag containing both blue and green marbles, without replacing the marbles between draws. If B = blue and G = green, which of the following represents the probability of drawing a blue marble on the first draw and a green marble on the second?

A. P (B) • P (G)

B. P (B and G)

C. P (G after B)

D. P (B, then G)

You are randomly drawing marbles from a bag containing 4 blue and 2 green marbles, replacing the marbles between draws. Which of the following will give the probability of drawing a blue marble on both your first and second draws?

A. 1 over 4 • 1 over 4

B. 4 over 6 • 4 over 6

C. 1 over 4 • 1 over 3

D. 4 over 6 • 3 over 6