I.
Knowledge. Answer the questions that follow by choosing the correct answer from the box
below.
Complement of an
event
Event
Experiment
Mutually
exclusive
Outcome
Probability
Probability of an
event
Sample space
Simple event
Trial
1. It is the field of mathematics that deals with chance. _____
2. It is an activity in which the results cannot be predicted with certainty. _____
3. It is the repetition of an experiment. _____
4. It is the result of an experiment. _____
5. It is any collection of outcomes. _____
6. It is an event with only one possible outcome. _____
7. It is the set of all possible outcomes of an experiment. _____
8. It is the measure of likelihood that an event will happen. _____
9. It is the set of all outcomes not in the event. _____
10. These are events that cannot happen at the same time. _____
II.
Process. Solve for the following probabilities:
1. In a class of 40 students, 8 are in the drama club and 12 are in the art club. If a student is selected at
random, what is the probability that the selected student is:
a. In the drama club?
b. In the art club?
2. A bag contains 50 marbles, 28 red ones and 22 blue ones. A marble is picked at random from the bag.
What is the probability of picking:
a. A red marble?
b. A blue marble?
3. A two-digit number is written at random. Determine the probability that the number will be:
a. An odd number
b. Larger than 75
c. A multiple of 5
d. An even number smaller than 40?
4. In a group of 30 students, there are 14 girls and 4 of them can speak French. 6 of the 16 boys can
speak French. If a student is selected randomly from the group, find the probability that the selected
student:
a. Can speak French.
b. Is a boy.
c. Is a girl who can speak French.
5. A coin is thrown 3 times. What is the probability that?
a. At least one head is obtained?
b. The faces are all the same?
c. There will be exactly 2 tails?
6. Find the probability of getting a numbered card when a card is drawn from the pack of 52 cards.
7. There are 5 green 7 red balls. Two balls are selected one by one without replacement. Find the
probability that first is green and second is red.
8. What is the probability of getting a sum of 7 when two dice are thrown?
9. 1 card is drawn at random from the pack of 52 cards. Find the probability that it is:
a. An honour card. (Honour cards are A, J, Q, K)
b. A face card.
10. Two cards are drawn from the pack of 52 cards. Find the probability that both are diamonds or both are
kings.