Probability

Probability is ...

• the chance that some event will occur.
• a game that involves coins.
• a guarantee.

Probability can be written as ...

• a fraction
• a decimal
• a percent
• all of the above

What is the probability of flipping a coin and getting heads?

• 1/2
• 1/3
• 1/4
• Never, Tails never fails.

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

A die is rolled once.  What is the probability of rolling a 5? Your answer should be a fraction in simplest form.

• 1/6
• 1/3
• 2/5
• 5/6

What is the probability of drawing an odd number, then drawing a 6? (no replacement--dependent event)

• 3/8

• 3/7

• 9/56

• 5/37

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.

What is the Probability of drawing a white, then purple, then black?

• 1/36

• 2/39

• 5/41

• 6/43

You are playing a game of scrabble. The tiles shown are dropped in a bag. You need to choose two tiles. What is the probability of choosing an "E", keeping it, and then choosing a "H"?

• 4/15

• 1/70

• 1/75

• 1/225