Which of the following is the correct representation of subset?
Which of the following is the correct representation of a subset?
- A.
A ⊂ B
- B.
A ⊃ B
- C.
A ∩ B
- D.
A ∪ B
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Show answer & explanation
Correct answer: A
A ⊂ B means "A is a subset of B". This notation is used when all elements of set A are also elements of set B.
Note: In some texts, the symbol ⊂ is used to mean a proper subset (A is contained in B but A ≠ B) and the symbol ⊆ is used to allow equality (A may equal B). Usage can vary, so check the context.
Example: If A = {1, 2} and B = {1, 2, 3}, then A ⊂ B because every element of A (1 and 2) is also in B.