# Worksheet: Probability of Simple Events

In this worksheet, we will practice finding the probability of a simple event and write it as a fraction.

Q1:

A bag contains 7 white marbles, 8 black marbles, and 7 red marbles. If a marble is chosen at random from the bag, what is the probability that it is white?

• A
• B
• C
• D

Q2:

A box contains 7 white balls, 3 black balls, and 8 red balls. What is the probability that a ball drawn at random is black?

• A
• B
• C
• D
• E

Q3:

A card is selected at random from a pack of 16 cards which are numbered 1 to 16. What is the probability of the selected card having an even number?

• A
• B
• C
• D
• E

Q4:

A class contains 6 boys and 21 girls. If a pupil is selected at random, what is the probability they are a girl?

• A
• B
• C
• D
• E

Q5:

What is the probability of rolling an even prime number on a fair die?

• A
• B
• C
• D

Q6:

What is the probability of rolling an even number greater than 0 on a fair die?

• A0
• B1
• C
• D

Q7:

What is the probability of rolling a prime number which is less than 7 on a regular dice?

• A
• B0
• C
• D1

Q8:

What is the probability of rolling an even number greater than 1 on a fair die?

• A
• B
• C
• D

Q9:

A deck of cards contains 26 cards numbered from 1 to 26. If a card is drawn at random, what is the probability of getting a card with a number greater than 26?

• A0
• B1
• C
• D

Q10:

Cards in a deck are numbered from 1 to 86. If a card is chosen at random, what is the probability that the card has an odd number greater than 13?

• A
• B
• C
• D

Q11:

A card is drawn from a deck of cards numbered from 1 to 37. What is the probability that the number on the card is even?

• A
• B
• C1
• D
• E

Q12:

Moataz wrote the names Omar, Ali, Yasser, Sandy, Ahmed, and Mahmoud on six different cards. What is the probability that a randomly chosen card will have a name that is 5 letters long?

• A
• B
• C
• D

Q13:

A deck of cards contains cards numbered 1 to 41. If a card is picked at random, what is the probability that the card picked carries an odd number greater than 35?

• A
• B
• C
• D
• E

Q14:

A card is selected at random from a deck of cards numbered 1 to 55. What is the probability of the card having an even number which is divisible by 3?

• A
• B
• C
• D

Q15:

A card is selected from a deck of cards numbered 1 to 19. What is the probability that the card has an odd prime number?

• A
• B
• C
• D

Q16:

What is the probability of selecting at random a prime number from the numbers 8, 9, 20, 19, 3, and 15?

• A
• B0
• C
• D1
• E

Q17:

A special fair die has faces with the numbers 19, 20, 21, 22, 23, and 24. What is the probability of rolling a prime number on this special die?

• A
• B
• C
• D

Q18:

A deck of cards numbered 1 to 15 is shuffled, and a card is chosen. What is the probability that the chosen card has a number which is divisible by 3 and 5?

• A
• B
• C
• D

Q19:

Which of the following could represent the probability of an event occurring?

• A
• B
• C
• D

Q20:

A deck of cards contains cards numbered 6 to 16. If a card is drawn at random, what is the probability of getting a card with a prime number?

• A
• B
• C
• D

Q21:

A card is drawn at random from a set of cards with the numbers 1, 3, 9, 15, and 19. What is the probability that the card drawn has a number between 2 and 7?

• A
• B1
• C
• D
• E

Q22:

Moataz wrote the names Mohamed, Mahmoud, Sara, Ahmed, Hala, and Youssef on six different cards. What is the probability that a randomly chosen card will have a name with more than 6 letters?

• A
• B
• C
• D

Q23:

Moataz wrote the names Sandy, Adel, Omar, Suzan, Yasser, and Hala on six different cards. What is the probability that a randomly chosen card will have a name with less than 6 letters?

• A
• B
• C1
• D

Q24:

A deck of cards numbered 1 to 20 is shuffled, and a card is chosen at random. What is the probability that the chosen card has a number which is divisible by 2?

Q25:

What is the probability of selecting a vowel at random from the English alphabet?

• Anone of the mentioned
• B
• C
• D