Intro Probability and Odds

The probability of getting bonus points is 5:8. Find the odds in favor of getting bonus points.

• 5/3

• 5/13

• 3/5

• 8/13

The odds against a customer ordering dessert are 20:3. What is the probability of a customer ordering dessert?

• 3/20

• 20/23

• 3/23

• 20/3

Out of 10 balloons, two are small, five are medium, and three are large. Find the odds against a large balloons.

• 3:7

• 3:10

• 7:10

• 7:3

Out of 10 balloons, two are small, five are medium, and three are large. Find the odds in favor of a small balloon.

• 2:8

• 8:10

• 2:10

• 8:2

Suppose one card is drawn at random from a standard deck. What is the probability that the card drawn is a club?

• 1/4

• 1/3

• 4/1

• 3/1

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”?

• 2/7

• 5/49

• 5/7

• 10/49

A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?

• 3
• 1/10
• 3/10
• 30%

What are the odds in favor of randomly selecting a dime from a dish containing 11 pennies, 6 nickels, 5 dimes, and 3 quarters? 

• 4:1
• 1:4
• 1:5
• 5:1

An impossible event has a probability of _____?

• 1
• 0
• 1/2
• 100

The odds in favor of receiving a gift are 5:16. Find the probability of Henry receiving a gift.

• 16/5

• 5/21

• None of these

• 5/16