← Change Exercise
Subsets and equal sets
Which relation holds between the sets A and B?
A = ∅
B = ∅
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A set A is a subset of a set B (A ⊆ B) if every element of A is also in B. Two sets are equal (A = B) if they have exactly the same elements — the order and the way they are written do not matter.
What does this generator do?
It shows two sets and four options. On easy, both sets are listed. On medium, one set is given by a rule. On hard, both are given by rules.
How to use it
1) If a set is given by a rule, list its elements first. 2) Check whether every element of A is in B. 3) Then check whether every element of B is in A. 4) If both are true, the sets are equal.