Section
2.2
12.
Answer true or false. If false, give the reason.
{engineer, social worker}
⊆
{physician, attorney, engineer, teacher}
Answer: False.
Social worker is not an element of the second set, so the first set is
not a subset of the second.
28.
Determine whether
A = B, A
⊆
B, B
⊆
A, A
⊂
B, B
⊂
A,
or none of these. (There
may be more than one answer.)
{1,3,5,7,9}
{3,9,5,7,6}
A
B
=
=
Answer:
None of these.
52.
Salad Toppings
Donald Wheeler is ordering a salad at a Ruby Tuesday restaurant.
He can purchase a salad consisting of just lettuce, or he can add any of the following
items: cucumber, onion, tomato, carrot, green pepper, olive, mushroom. How many
different variations of a salad are possible?
Answer:
7 possible items. 2
7
= 128 different variations or 129 if you include the
plain, lettuce salad.
Section 2.3
34.
Use the Venn diagram to list the set of elements in roster form.
B
Answer:
B = {f, r, d, g, h, a}
2