Probability 7th Grade Summer Review

If there are 3 red marbles in a bag of 10 marbles, what is the chance of drawing a NOT red marble?

• 70%

• 30%

• 3%

• 7%

If there are 5 blue marbles in a bag of 20 marbles, what is the chance of drawing a blue marble?

• 20%

• 50%

• 5%

• 25%

If there is a 73% chance of rain tomorrow, what is the probability it will rain?

• Likely

• Unlikely

• Certain

• Impossible

If there is a 2% chance of rain tomorrow, what is the probability it will rain?

• Likely

• Unlikely

• Certain

• Impossible

If there is a 100% chance of rain tomorrow, what is the probability it will rain?

• Likely

• Unlikely

• Certain

• Impossible

If you flip a coin, what is the chance of getting heads?

• 1/5

• 1/50

• 1/2

• 1/4

There is a 20% chance of drawing a white gumballs out of a bag of random gumballs. There are 50 gumballs in the machine. How many are white?

• 20

• 10

• 50

• 5

There is a 40% chance of drawing a green gumball out of a bag of random gumballs. There are 20 gumballs in the machine. How many are green?

• 20

• 4

• 8

• 5

If an event is "impossible", what is the chance it will occur?

• 0%

• 100%

• less than 10%

• 10%

If an event is "equally likely or unlikely", what is the chance it will occur?

• 100%

• 50%

• 0%

• 10%