Question

Answer as a decimal with 3 significant digits

Answer 1

• 0.0833
• 0.75

Explanation:

There are four different color marbles.

Probability of blue:

• P(B) = 1/4,

Next, there are 3 marbles left in the bag since no replacement.

Probability of red after blue:

• P(R) = 1/3

The probability of these two steps in order:

• P(Blue then Red) = 1/4*1/3 = 1/12 = 0.0833

Complement of R is:

• P(Rc) = 1 - P(R) = 1 - 1/4 = 3/4 = 0.75