2.2 Practice

Question 1

T/F: 3 ∈ {3,4,5}

Answer 1

True

Question 2

T/F: {3} ∈ {3,4,5}

Answer 2

False

Question 3

T/F: {3} ∈ I{3},{4},{5}J

Answer 3

True

Question 4

T/F: {3} ⊆ {3,4,5}

Answer 4

True

Question 5

3 ⊆ {3,4,5}

Answer 5

False

Question 6

T/F: { } ⊆ {3,4,5}

Answer 6

True

Question 7

Determine the number of distinct subsets in A = {1, 2, 3}

Answer 7

2^3 = 8

Question 8

List the subsets in A = {1, 2, 3}

Answer 8

{ }, {1, 2, 3}, {1, 2}, {1, 3}, {2, 3}, {1}, {2}, {3}