Probability of Simple Events Complements

The chart shows the number of times a marble was selected randomly from a bag.  What is the probability that the marble selected is NOT green or blue?

• 21/38

• 10/28

• 5/14

• 17/38

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

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

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?

•  - (23/30)

• + (7/30)

• + (23/30)

• - (7/30)

Mrs. Vasquez has a box of marbles containing 6 pink and 9 purple.  If a student reaches in the box and removes one bead, which expression represents the probability of NOT removing a purple marble?

• - (6/15)

• +(6/15)

• - (9/15)

• + (9/15)

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