Which statement about the EMPTY SET ∅ is INCORRECT?
A∅ has zero elements, so n(∅) = 0
B∅ is equal to {0}
C∅ is a subset of every set
D∅ is denoted by ∅ or { }
Answer & Solution
Correct answer: B. ∅ is equal to {0}
{0} contains one element (the number zero) — it is NOT empty. ∅ contains no element at all. ∅ ⊂ S for every set S; n(∅) = 0; standard notation is ∅ or { }.
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