Question

Benjamin has 10 marbles in a bag. 4 are red, 2 are blue, 3 are green, and 1 is yellow.

Part A: What is the probability of drawing a color other than blue?

Part B: You draw two marbles with replacement. What is the probability of drawing a red, then a blue?

Part C: What is the probability that you draw a yellow and then draw a red without replacement?

Answer 1

A) 4/5

B) 2/25

C) 2/45

Explanation:

A) P(not blue) = 8/10 or 4/5

B) P(red,blue) = 4/10 x 2/10 = 2/25

C) P(yellow,red) = 1/10 x 4/9 = 2/45