Probability

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 spinning an EVEN number? 

• 50%

• 75%

What is the probability of selecting a brown M&M from this bowl?

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

• 0%

• 100%

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

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 75% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 100% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

When figuring the probability of an event, what number goes on bottom of your fraction?

• The number of the desired event

• The total number of choices possible

• The event that happens most

• The event that happens least

A bag has 7 marbles: 2 green, 2 blue, and 3 orange. What is the probability of reaching in and NOT pulling out a green?

• 2/7

• 3/7

• 4/7

• 5/7

The probability that it will snow on Christmas Eve is 1/7. What is the probability that it will NOT snow on Christmas Eve?

• 1/7

• 6/7

• 100%

• 0%