Calculating Simple Probabilities in Everyday Situations

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

• 1/2

• 3/8

• 5/8

• 2/5

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

• 0.6

• 0.8

• 0.4

• 0.5

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

• 1/4

• 1/2

• 1/3

• 1/5

If you roll a standard six-sided die, what is the probability of rolling an even number?

• 1/2

• 2/3

• 1/3

• 1/4

A deck of cards has 52 cards. What is the probability of drawing a heart?

• 1/5

• 1/2

• 1/4

• 1/3

In a fruit basket with 6 apples, 4 bananas, and 2 oranges, what is the probability of picking a banana?

• 1/3

• 1/2

• 3/4

• 2/5

A school has 200 students, and 50 of them play soccer. What is the probability that a randomly selected student plays soccer?

• 0.75

• 0.10

• 0.50

• 0.25

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

• 1/4

• 1/2

• 1/3

• 3/4

A jar contains 10 cookies: 4 chocolate chip, 3 oatmeal, and 3 peanut butter. What is the probability of picking a chocolate chip cookie?

• 0.4

• 0.5

• 0.2

• 0.3

In a lottery with 100 tickets, 5 are winning tickets. What is the probability of selecting a winning ticket?

• 0.05

• 0.25

• 0.02

• 0.1