Section PC.0 – Solutions to the Practice Problems

1. {m, i, s, p}

2. {January, February, March, April, May, June, July, August, September, October, November, December}

3. {1, 2, 3, 4, 7, 9, 10}

4. {orange, yellow, purple}

5. {2, 8, 12, 14}

6.

a. {2, 3, 5, 7, 10, 11, 12, 13, 14, 16, 17, 19, 20}

b. {5, 10, 13, 14, 16, 19}

c. {20}

7.

a. {1, 4, 5, 6, 8, 11, 12, 14, 15, 16, 17, 18}

b. {11, 12, 16}

c. {6, 14, 17, 18}

8.

a. {1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 14, 15, 17, 18, 19, 20}

b. {9, 12, 14}

c. {5, 17, 19, 20}

9.

a. {2, 3, 5, 6, 8, 10}

b. {} or Ø

c. {5}

d. {1, 4, 7, 9}

10.

a. {s, t}

b. {c, k}

11.

a.

b.

c.

d.

12.

a. {b, d}

b. {a}

13.

a. 5

b. 3

c. 6

d. 1

14.

a. 3

b. 5

c. 7

d. 4

e. 6

15.

a. 23

b. 24

c. 29

d. 18

e. 8

f. 44

g. 21

16.

a. 8

b. 15

c. 12

d. 11

e. 2

f. 18

g. 5

17.

a. 32

b. 27

c. 52

d. 4

e. 68

f. 37

18.

a. 28

b. 8

c. 11

d. 29

19.

a. 24

b. 11

c. 13

20.

a. 44

b. 25

c. 10

d. 35