Pre-Lesson 4.1 - Simple Probability Review

• 0%

• 100%

A likely chance event is closer to what number?

• 0
• 1
• .5
• 100

• 0%

• 100%

An event has a 0% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

A bag has 10 marbles: 4 red, 2 green, 2 blue, 2 yellow. If you reach in the bag and pull out one marble, what is the probability it will be a blue marble?

• 4/10 or 2/5

• 2/10 or 1/5

• 10/10 or 1

• 0/10 or 0

What is the probability of selecting an orange candy?

• 0%
• 25%
• 50%
• 100%

The letters that form the word ALGEBRA are placed in a bowl.

What is the probability of choosing a letter that is NOT “A”?

What is the probability of selecting a brown M&M from this bowl? (SIMPLIFY YOUR FRACTION)

4 yellow, 6 orange, 2 brown, 3 green, 5 blue

Probability can be written as ...

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

The chart below represents the number of marbles in a jar. (SIMPLIFY THE FRACTION)

P(green) = 

• 5/19

• 10/28

• 5/14