7th Grade Probability: Simple Probabilities & Complements

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

• 2/5

• 5/8

• 1/2

• 3/8

In a class of 30 students, 18 are girls. What is the probability of randomly selecting a boy from the class?

• 0.5

• 0.4

• 0.3

• 0.6

A die is rolled. What is the probability of rolling a number greater than 4?

• 1/3

• 1/2

• 1/4

• 2/3

If a card is drawn from a standard deck of 52 cards, what is the probability of drawing a heart?

• 1/4

• 1/5

• 1/3

• 1/2

In a survey, 70% of people prefer chocolate ice cream. What is the probability that a randomly selected person does not prefer chocolate ice cream?

• 1.00

• 0.30

• 0.50

• 0.70

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

• 3/4

• 1/2

• 1/3

• 1/4

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

• 1/4

• 3/4

• 1/3

• 1/2

A box contains 10 pens, 4 of which are blue. What is the probability of selecting a pen that is not blue?

• 0.6

• 0.2

• 0.8

• 0.4

In a game, the chance of winning is 25%. What is the probability of not winning?

• 0.25

• 0.50

• 0.75

• 1.00

A school has 200 students, and 120 of them play soccer. What is the probability that a randomly chosen student does not play soccer?

• 0.6

• 0.5

• 0.4

• 0.3