Probability of Simple Events

Earl Darenz is asked to choose a day from a week. What is the probability of choosing a day which starts with S.

• 1/7

• 2/7

• 2/3

• 1/3

The sides of a cube are numbered 11 to 16. If Jan Renz rolled the cube once, what is the probability of rolling a composite number?

• 1/2

• 1/4

• 2/3

• 3/4

If a letter is chosen randomly from the word PERSEVERANCE, what is the probability that the letter chosen is E.

• 1/7

• 1/4

• 1/5

• 1/3

Of the 45 students in a class, 25 are boys. If a student is selected at a random for a field trip, what is the probability of selecting a girl?

• 3/8

• 4/5

• 2/7

• 4/9

A spinner is divided equally and numbered as follows: 1, 1, 2, 3, 3, 4, 1, 1, 2, 4, 1, 2, 3, 4, 1, 2. what is the probability that a pointer will stop at an even prime number?

• 2/3

• 1/4

• 1/3

• 3/4

What is the probability of rolling an even number if a single dice is rolled once?

• 1/2

• 1/4

• 1/6

• 2/3

In a standard deck of cards, What is the probability of picking a heart?

• 2/3

• 1/7

• 1/4

• 3/5

A die is thrown once. What is the probability that the score is a factor of 6?

• 1/6

• 1/2

• 2/3

• 1

There are 4 blue marbles, 5 red marbles, 1 green marble, and 2 black marbles in a bag. If a marble is chosen at random, what it the probability that a marble chosen is blue?

• 1/2

• 2/3

• 1/4

• 1/3

A color wheel contains 4 colors; red, orange, green and blue. If a wheel is spun once what is the probability of getting an orange?

• 1

• 2/3

• 1/4

• 1/3