Math Probability

Daniel bought a sack that contained 60 marbles. The table shows the color and number of marbles in the sack.

• 70

• 40

• 68

• 55

A box contains 6 sugar cookies, 2 peanut butter cookies, and 7 chocolate chip cookies. What is the probability of picking a a sugar cookie from the box?

• 40%

• 25%

• 60%

• 84%

Suppose ten tosses of a coin were all heads. If you switch to a new coin, what is the probability that the next coin toss will result in another head?

• 1/1024

• 1/11

• 1/6

• 1/2

A box of lollipops contains 4 strawberry lollipops, 3 sour apple lollipops, 2 grape lollipops, and 1 blue raspberry lollipop. Your friend randomly selects a lollipop and does not replace it. Then you randomly select a lollipop. What is the probability that your friend will get a strawberry lollipop and you will get a sour apple lollipop?

• 3/25

• 2/7

• 1/5

• 2/15

Bryson has a bag of colored tiles. From an experiment, he determined that the probability of drawing a blue tile was 7 out of 10. If he draws 100 tiles, replacing each one after drawing, how many times can he expect to draw a blue tile?

• 7

• 70

• 30

• 50

Tommy has a bag of gumballs. The bag contains 4 blue gumballs, 7 white gumballs, and 5 green gumballs. He will randomly select two gumballs from the bag, one at a time, without replacement. What is the probability he will select a a green gumball first and then a blue gumball?

• 5/64

• 11/16

• 1/12

• 1/24

In Mrs. Smith's bag there are 4 blue folders, 3 red folders, 1 yellow folder, and 10 green folders. Mrs. Smith will randomly choose 1 folder from the bag. What is the probability she will choose a green folder?

• 1/10

• 5/9

• 3/4

• 2/3

Lyndsey is going to buy a new car. She has the options listed below.
Type: 2-door or 4-door
Interior: leather or cloth
Paint Color: black, white, red, blue
How many different cars are in the sample space?

• 8

• 12

• 24

• 16

A recent survey showed that 64 out of 100 junior high students prefer to monitor their grades electronically instead of receiving a paper copy of their grade report. Which is a good prediction of the number of students who will prefer a paper grade report if there are a total of 450 students?

• 162

• 288

• 286

• 250

Jacob rolled a fair number cube 75 times. He rolled a three 20 times. What is the experimental probability of rolling a three?

• 1/5

• 3/25

• 13/20

• 4/15