1. Probability Pre-Test
How likely is THAT?
unsettled business by flickr user thisisforever
2.
3.
4. (3) Using the word FOOD, the probability that an arrangement of this
word will begin with the two O’s if all the letters are used, correct to the
nearest hundredth, must be:
5.
6. (4) Events A and B have the following probabilities of occurring; 0.2 = P(A) ,
0.5 = P(B) . If these events are mutually exclusive, the value of P(AorB) ,
correct to the nearest tenth, must be:
7. (5) Including Peter and Deanna, a particular school council has 10
members. Committees, each containing 4 members, are chosen from this
council. Find the probability that:
(a) Peter and Deanna are both chosen for the committee.
(b) either Peter or Deanna is chosen for the committee.
(c) neither Peter nor Deanna is chosen for the committee.
8. An examination consists of thirteen questions. A student must answer
only one of the first two questions and only nine of the remaining ones.
How many choices of questions does the student have?
EXTRA PRACTICE
9. Randomly arranged on a bookshelf are 5 thick books, 4 medium-sized
books, and 3 thin books. What is the probability that the books of the
same size stay together?
EXTRA PRACTICE
