Understanding Probability and Its Complement

What does a probability of 0 indicate about an event?

• The event is equally likely as not happening

• The event is likely to happen

• The event is certain to happen

• The event is impossible to happen

If Steve is half as likely to select a toothpaste jelly bean as a lemon jelly bean, what does this tell us about their quantities?

• The quantities of lemon and toothpaste jelly beans are equal

• There are half as many lemon jelly beans as toothpaste jelly beans

• There are no toothpaste jelly beans

• There are twice as many lemon jelly beans as toothpaste jelly beans

If Rebecca is equally likely to choose a peanut butter or snickerdoodle cookie as a sugar cookie, what does this imply about their quantities?

• There are more sugar cookies

• There are fewer sugar cookies

• The quantities are the same

• There are no sugar cookies

What is the probability of choosing a striped marble from a bag if there are two striped marbles out of six total marbles?

• 1/6

• 1/2

• 1/3

• 2/3

What is the probability of not choosing a sparkle marble if half of the marbles are sparkles?

• 3/4

• 2/3

• 1/3

• 1/2

What does a probability of 1/2 indicate when rolling a standard number cube?

• Rolling an even number

• Rolling a number greater than 3

• Rolling an odd number

• Rolling a prime number

If there are 10 black socks out of 24 in a laundry basket, what is the probability of drawing a black sock?

• 1/3

• 1/2

• 5/12

• 2/5

What does the probability of spinning not a six on a seven-section spinner indicate?

• 1/7

• 6/7

• 1/6

• 5/6

In the word 'soccer', what is the probability of randomly drawing a consonant?

• 1/3

• 3/4

• 2/3

• 1/2

What does a probability of two-thirds represent when selecting a book from a library shelf, if one-third are non-fiction?

• Selecting a non-fiction book

• Selecting a book without a cover

• Selecting a fiction book

• Selecting a book with pictures