Question

12) A bag contains 9 red, 5 yellow, and 4 blue marbles. What is the probability of pulling out a blue marble, followed by a red marble, without replacing the blue marble first?

Answer 1

red marbles = 9

yellow marbles = 5

blue marbles = 4

total marbles = 9 + 5 + 4 = 18

The probability of pulling out a blue marble, followed by a red marble without replacing the blue marble first can be calculated below

`(4)/(18)*(9)/(17)=(36)/(306)=(12)/(102)=(6)/(51)`