Probability/Counting Quiz

Which of these contexts describes a situation that is unlikely?

• Rolling a 6 sided die, numbered from 1 to 6.

• Spinning a spinner divided into four sections colored red/green/yellow/blue and landing on a primary color (red or yellow or blue

• Winning a raffle that sold a total of 100 tickets if you bought 95 tickets

• Reaching into a bag full of 5 strawberry chews and 15 cherry chews without looking and pulling out a pineapple chew

Malika's school is selling 100 raffle-tickets to raise money for a new gymnasium, and the grand prize is a ten speed mountain bike. Which word or phrase describes the probability that she will win the raffle if she buys all the tickets?

• an equal chance or 50-50

• unlikely

• certain

• likely

Dianely's school is selling 100 raffle-tickets to raise money for a new gymnasium, and the grand prize is a ten-speed mountain bike. Which word or phrase describes the probability that she will win the raffle if she buys 0 tickets?

• an equal chance or 50-50

• impossible

• certain

• unlikely

Which of the contexts describes a situation that is an equal chance or 50-50

• Rolling an even number or an odd number on a standard six-sided die, numbered 1 to 6.

• Spinning a spinner divided into four equal sized sections colored red/green/yellow/

  blue and landing on red or yellow or green or blue

• Winning a raffle that sold a total of 100 tickets if you bought 90 tickets

• Reaching into a bag full of 10 strawberry chews and 10 cherry chews without looking and pulling out a strawberry chew

• 12

• 13

• 14

• 15

• 20

• 25

• 30

• 35

• 3%

• 4%

• 5%

• 7%

Which event is least likely to occur?

• Rolling a multiple of 3 on a twelve-sided die, numbered from 1 to 12.

• Spinning a spinner divided into five equal-sized sections colored red/green/yellow/blue/purple and landing on green.

• Winning a raffle that sold a total of 100 tickets, if you buy 86 tickets.

• Reaching into a bag full of 60 strawberry chews and 0 cherry chews without looking and pulling out a strawberry chew.

Which event is least likely to occur?

• Rolling a number less than 6 on a six-sided die, numbered from 1 to 6.

• Spinning a spinner divided into five equal-sized sections colored red/green/yellow/blue/purple and landing on blue or purple.

• Winning a raffle that sold a total of 100 tickets, if you buy 54 tickets.

• Reaching into a bag full of 1 strawberry chews and 39 cherry chews without looking and pulling out a strawberry chew.