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Math 12F LG 13 Practice Unit Test #1



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Given the following situation:
• the universal set U = {positive integers less than 20}
X = {4, 5, 6, 7, 8}
P = {prime numbers of U}
O = {odd numbers of U}

Which is the complement of P?
A.
the even numbers of U
B.
the universal set excluding the set of X
C.
the positive integers greater than 20
D.
the non-prime numbers of U
 

 2. 

Consider the following Venn diagram of foods we eat raw or cooked:
mc002-1.jpg

Determine n(H È C).
A.
2
B.
5
C.
10
D.
3
 

 3. 

A summer camp offers canoeing, rock climbing, and archery. The following Venn diagram shows the types of activities the campers like.
mc003-1.jpg

Use the diagram to determine n((R Ç A) \ C).
A.
14
B.
5
C.
26
D.
8
 

 4. 

Which sentence is written as a conditional statement?
A.
You can fool some of the people some of the time but you can’t fool me.
B.
If you are a farmer, then you live in the country.
C.
If you can’t beat them, join them.
D.
You get wet if you stand in the rain.
 

 5. 

Which statement is true?
 
A.
If the converse of a conditional statement is true, then the contrapositive of the statement is also true, and vice versa.
B.
If the inverse of a conditional statement is true, then the converse of the statement is also true, and vice versa.
C.
If a conditional statement is true, then its inverse is true, and vice versa.
D.
If a conditional statement is true, then its converse is true, and vice versa.
 

 6. 

What is true about the conditional statement below?
“If tomorrow is Monday, then today is Sunday.”
 
A.
The statement and contrapositive are true but the inverse and converse are false.
B.
The inverse and contrapositive are true but the statement and converse are false.
C.
The converse and inverse are true but statement and contrapositive are false.
D.
The statement, converse, inverse, and contrapositive are all true.
 

 7. 

Which statement is the contrapositive of the conditional statement below?
“If a bird has wings, then the bird can fly.”
A.
If a bird does not have wings, then the bird cannot fly.
B.
If the bird cannot fly, then the bird does not have wings.
C.
If a bird can fly, then the bird has wings.
D.
If a bird does not have wings, then the bird can fly.
 

 8. 

A combination lock opens with the correct three-digit code. Each wheel rotates through the digits 1 to 8. How many different three-digit codes are possible?
A.
24
B.
64
C.
512
D.
1024
 

 9. 

How many different routes are there from A to B, if you only travel south or east?
mc009-1.jpg
A.
128
B.
256
C.
156
D.
104
 

 10. 

Which of the following is equivalent to mc010-1.jpg?
A.
mc010-2.jpg
B.
mc010-3.jpg
C.
mc010-4.jpg
D.
mc010-5.jpg
 

 11. 

How many ways can the 6 starting positions on a hockey team (1 goalie, 2 defense, 3 forwards) be filled from a team of 1 goalie, 4 defense, and 8 forwards?
A.
164
B.
254
C.
336
D.
1716
 

 12. 

The weather forecaster says that there is a 50% probability of showers tomorrow. Determine the odds against showers.
A.
1 : 1
B.
5 : 10
C.
2 : 1
D.
1 : 2
 

 13. 

A credit card company randomly generates temporary three-digit pass codes for cardholders. The pass code will consist of three different even digits. Determine the total number of pass codes using three different even digits.
A.
5P5
B.
5P3
C.
5P4
D.
5P1
 

 14. 

Rino has six loonies, four toonies, and two quarters in his pocket. He needs two loonies for a parking meter. He reaches into his pocket and pulls out two coins at random. Determine the probability that both coins are loonies.
A.
16.3%
B.
18.4%
C.
22.7%
D.
25.9%
 

 15. 

A three-colour spinner is spun, and a die is rolled. Determine the probability that you spin blue and roll a 4.
A.
1.24%
B.
5.56%
C.
7.17%
D.
9.82%
 

Short Answer
 

 1. 

Write the inverse of the conditional statement below. Verify the inverse or disprove it with a counterexample.
“If the height and radius of a cone and cylinder are the same, then the cone is one third the volume of the cylinder.”
 

 2. 

Evaluate.
sa002-1.jpg
 

 3. 

The numbers 10 to 18 are written on identical slips of paper and put in a hat. How many ways can 7 numbers be drawn simultaneously?
 

Problem
 

 1. 

Consuela lives in Edmonton and misses her mother’s Venezuelan cooking.  She will be happy with any restaurant serving Central American or South American food.  She also wants her dinner to cost less than $20. Write a set or search instructions Consuela could use to find a restaurant she likes. Use searching tools to narrow down the number of hits.
 

 2. 

There are 12 boys and 15 girls in an English classroom. A group of 5 students is needed to read from a play. If there are 2 roles for boys, 2 roles for girls, and a narrator who could be a boy or a girl, how many different groups of 5 students are possible? Show your work.
 

 3. 

A hockey team is lining up in a row for a group photo. There team has 1 goalie, 4 defense, and 7 forwards. The photographer wants the defense on one side of the goalie and the forwards on the other side. How many ways can the team stand in a row for this pose? Show your work.
 



 
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