Probability Quiz

If the probability of raining today is 40%, what is the probability that it will NOT rain?

• 60%

• 40%

• 50%

• 30%

In a school, 60% of students participate in sports, 45% participate in music, and 25% participate in both. What is the probability that a randomly selected student is involved in either sports or music?

A bag contains 3 red balls and 7 blue balls. What is the probability of picking either a red or a blue ball?

• 3/10

• 7/10

• 10/10

• 0/10

A survey showed that 70% of people like coffee, 50% like tea, and 30% like both. What is the probability that a person chosen at random likes either coffee or tea?

In a classroom of 30 students, 18 like math, 12 like science, and 5 like both subjects. How many students like either math or science?

• 25

• 18

• 12

• 30

A city has a 20% chance of experiencing a power outage during a storm. What is the probability that there will NOT be a power outage?

A student can either pass or fail an exam. If the probability of passing is 80%, what is the probability of failing?

• 80%

• 50%

• 20%

• 0%

A bag contains 4 red, 6 blue, and 10 green marbles. What is the probability of NOT drawing a blue marble?

A fair die is rolled. What is the probability of getting an even number or a number greater than 3?

• 5/6

• 3/6

• 2/6

• 1/6

A deck of cards contains 52 cards. What is the probability of drawing either a heart or a face card (Jack, Queen, King)?