Given the two sets:
A = {1, 2, 3}
B = {3, 2, 1}
Which of the following is a true statement?

4 ∈ B

A B

A is an infinite set

none of the above

Question

Given the two sets: 
A = {1, 2, 3}
B = {3, 2, 1}
Which of the following is a true statement?


4 ∈ B

A  B

A is an infinite set

none of the above

anonymous · Answer

may be none of the above... i didn't understand A B

anonymous · Answer

Between A and B was supposed to be the symbol that means every element in set A is an element in set B.

anonymous · Answer

So does every element of set A is in set B? and vice versa?

anonymous · Answer

I think so...

anonymous · Answer

You only think? i think you should be sure :)

anonymous · Answer

The expression A(symbol) B means every element in set A is an element in set B. A and B are considered subsets of each other.

anonymous · Answer

thats right.