Calculating Probability of Events

Julian selects a card at random from the cards shown.  What is the probability that the card Julian selects is a polygon? ( A polygon is a shape with 3 or more straight sides)

• ½
• ⅓
• ⅔
• ⅚

Miss Ward spins a wheel to determine the number of homework problems to assign. There are 20 sections labeled 1–20. What is the probability that there will be fewer than 13 problems assigned for homework?

• 13/20
• 3/5
• 4/9
• 7/20

Daniel bought a bag of 32 candy-coated chocolates.  Of those candies, 11 are blue and 10 are orange.  If Daniel selects a candy at random,  what is the probability that the candy will NOT be blue orange?

• 11/32
• 1/2
• 11/16
• 21/32

A bag of markers has 4 red markers, 5 blue markers, 3 yellow markers, and 3 green markers. If Maria pulls out a marker without looking, what is the probability he will NOT pull out a blue marker?

• 5/10
• 1/3
• 4/15
• 2/3

A small bag of jelly beans contains 2 lemons, 4 cherry, 1 lime, and 3 blueberry jelly beans. If Jessica chooses a jellybean without looking, what is the probability it will be cherry or blueberry?

• 3/10
• 7/10
• 1/2
• 1/4

Jose randomly selected a block like the ones shown from a bag.  What is the probability that he will choose a cube with a number less than 5?

• ⅔
• ⅙
• ⅓
• ⅚

Probability is ...

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

Which event or complement has a probability of ¼?

• P(yellow)
• P(NOT blue or orange)
• P(yellow or green)
• P(NOT green)

Without looking, Ashley selected a tile from the tiles shown.  What is the probability she will NOT choose a prime number? ( A prime number is any number with 1 and itself as factors)

• ⅗
• ⅖
• ½
• 4/9

What is the probability of spinning the spinner and having it land on RED?

• ⅓
• ½
• ⅔
• ⅚