How many subsets does this set have?

Question

A = {A, B, C, D}

10
6*
8
16

Question 2
Is

{3,4} ⊂ {set of integers}

no
yes*

Question 3
Which of the following is a subset of

A = { whole numbers}

{-2, 4, 7}*
{0, 4, 7}
{1/2, 4, 7}
{1.5, 4, 7}

Question 4
If U = Set of Integers from 1 through 8, and A = {2,4,6,8}
What is the complement of A?

{1, 3, 5, 7}
{0}
{1,2,3,4,5,6,7,8}*
{2,4,6,8}

Question 5
The complement of a set A is denoted

A^-1
A'*
A^2
n(A)

Question 6
If two sets have no elements in common, a Venn diagram would include

concentric circles
two separate circles with no overlap.*
overlapping circles.

Answer 1

#1 no. A set of n elements has 2^n subsets
#2 ok
#3 no. whole numbers are not negative
#4 no. study what "complement" means
#5 ok
#6 ok