Josh Sizemore

2022-01-06

Let $A=\{1,2,\{3,4\}\}$ . Which of the following are true and which false?

a.$1\in A$

b.$\left\{1\right\}\in A$

c.$3\in A$

d.$\left\{3\right\}\in A$

e.$\left\{3\right\}\subseteq A$

a.

b.

c.

d.

e.

Heather Fulton

Beginner2022-01-07Added 31 answers

a. True (the element 1 is in set A)

b. False (the set which contains the element 1 isn't set A)

c. False (3 alone is not an element of set A)

d. False (The set containing only 3 is not an element of set A)

e. False (3 would have to be an element of set A to male this variant true)

b. False (the set which contains the element 1 isn't set A)

c. False (3 alone is not an element of set A)

d. False (The set containing only 3 is not an element of set A)

e. False (3 would have to be an element of set A to male this variant true)

deginasiba

Beginner2022-01-08Added 31 answers

1. T

2. F

3. F

4. F

5. F

2. F

3. F

4. F

5. F

22+64

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