Complete Probability

A number cube is rolled twice. What is the probability of getting a 6 on the first roll, then a number less than 5 on the second roll? 

• 2/3

• 5/36

• 1/9

• 1/36

The two spinners above are spun. What is the probability of getting a perfect square (1,4,9,16), then the letter Z? 

• 3/20

• 9/20

• 1/8

• 11/40

Jacob's piggy bank has18 quarters, 20 dimes, 24 nickels, and 43 pennies. He chooses a coin, does not replace it, then chooses another. What is the probability that he chose a dime then
a nickel?

• 9/52

• 4/91

• 44/105

• 11/26

• A

• B

• C

• D

A refrigerator has a variety of drinks. The contents are shown below. If one drink is picked randomly, then which of the following is NOT true?

• You are twice as likely to select a cola than a water.

• You are half as likely to select a lemonade than a water.

• You are more likely to select a cola than a water or a lemonade.

• You are twice as likely to select a water than a cola.

What is the complement of a probability event occuring?

• The probability of that event NOT happening

• The same as the event's probability

• All possible outcomes in an event

• None of these

P(not A) = 
*Remember to simplify.*

• 6/8

• 3/4

• 2/8

• 1/4

Six of the 6 numbers are greater than 0. Spinning a number that is greater than 0 is...

• impossible

• unlikely

• as likely as not

• likely

• certain

What is the probability of a coin landing on its back?

• impossible

• unlikely

• as likely as unlikely

• likely

A fruit basket contains
9 apples, 3 bananas, 7 oranges, 5 pears, and 1 grapefruit. Kyle randomly chooses a fruit, does not replace it, then chooses another. What is the probably that he chose two pears? 

• 9/49

• 4/125

• 1/10

• 1/30