7th Grade Probability: Real-World Challenges Ahead!

A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of randomly selecting a blue marble?

• 0.3

• 0.5

• 0.1

• 0.2

In a class of 30 students, 12 are girls. What is the probability of randomly selecting a girl from the class?

• 0.4

• 0.3

• 0.5

• 0.2

A spinner is divided into 4 equal sections: red, blue, green, and yellow. What is the probability of landing on red or blue?

• 3/4

• 1/2

• 1/4

• 1/3

A die is rolled. What is the probability of rolling an even number?

• 1/3

• 2/3

• 3/6

• 1/2

In a deck of cards, what is the probability of drawing a heart?

• 1/2

• 1/5

• 1/4

• 1/3

A box contains 10 chocolates, 4 of which are dark chocolate. What is the probability of picking a dark chocolate at random?

• 0.4

• 0.1

• 0.2

• 0.5

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

• 1/3

• 2/3

• 1/4

• 1/2

A survey shows that 70% of people prefer coffee over tea. If you randomly select one person, what is the probability they prefer coffee?

• 0.90

• 0.30

• 0.50

• 0.70

In a game, you have a 1 in 6 chance of winning. If you play 12 times, what is the expected number of wins?

• 1

• 4

• 2

• 3

A school has 200 students, and 50 of them are in the band. What is the probability of randomly selecting a student who is not in the band?

• 0.50

• 0.10

• 0.75

• 0.25