Probability of Simple Events

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 or 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

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

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

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

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

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

The chart shows the number of students in Mr. Morales' Geometry class.  If a student is selected at random, which expression can be used to determine the probability the student will NOT be a male freshman?

• 1  - (23/30)
• 1 + (7/30)
• 1 + (23/30)
• 1 - (7/30)

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8