Question

A bag contains 3 red marbles, 4 blue marbles, and 5 white marbles. What is the probability of pulling out first a red, then a blue marble if none are replaced?

Answer 1

total marbles = 12
red = 3
blue = 4

probability of pulling a red = 3/12
probability of pulling a blue = 4/11 (no replacement) that is why is 11

Answer 2

now multiply 3/12 x 4/11

Answer 3

ok

Answer 4

so what did you get for answer

Answer 5

.0909090909090909

Answer 6

3 4 12 1
---- x ---- = ----- = -----
12 11 132 11

Answer 7

1/11 which is correct .09, don't know how you want the answer

Answer 8

thats good