Problema Solution
A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles.
What is the probability that you choose a red marble and then a green marble assuming you replace the first marble?
A)
1
24
B)
5
72
C)
5
66
Eliminate
D)
5
6
Answer provided by our tutors
P(red) = 5/(5 + 3 + 2 + 2) = 5/12
P(green) = 2/(5 + 3 + 2 + 2) = 2/12 = 1/6
P(red and green) = P(red)*P(green)
P(red and green) = (5/12)*(1/6)
P(red and green) = 5/72
P(red and green) = 0.0694