Probability Review

A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced.
P(white, then purple, then black)

• 1/36
• 2/39
• 5/41
• 6/43

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

• 3/5
• 9/100
• 1/10
• 2/5

The tree diagram shows the outcomes of rolling a die and flipping a coin.  
What is the probability of rolling a number higher than 3 and flipping a tails?

• ¹/₁₂
• ²/₁₂
• ³/₁₂
• ⁴/₁₂

P(B or E) = 
*Remember to simplify.*

• 1/2
• 1/4
• 1/8
• 4/8

A die is rolled.  What is the probability of rolling a 5 or a number greater than 3?

• 2/3
• 1/2
• 5/6
• 1

If you select a marble without looking, how likely is it that you will pick a black one?

• certain

• probable

• unlikely

• impossible

If you select a marble without looking, how likely is it that you will pick a black one?

• certain

• probable

• unlikely

• impossible

If you flip a coin, what is the probability that it will land on heads?

• 1/4

• 1/8

• 1/2

• 1/3

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

If you select a marble without looking, what is the probability that it will be blue?

• 1/3

• 2/5

• 1/6

• impossible