what is the cardinality of { }?

2 ⤊

what is the cardinality of { }?

{ } = null set

2006-10-27 09:04:31 · 3 answers · asked by Live & Let Live! 1 in Science & Mathematics ➔ Mathematics

3 answers

There are no elements in the null set, so the cardinality (number of elements) is zero.

In contrast, a set like {A, B, C, D} has cardinality of 4.

Basically all you need to know is that cardinality is the *number of elements* in the set. The null set has no elements, thus a cardinality of 0.

2006-10-27 09:08:15 · answer #1 · answered by Puzzling 7 · 2⤊ 1⤋

since there are no elements in the set the cardinality is zero

2006-10-30 00:18:36 · answer #2 · answered by M.Santhosh K 1 · 0⤊ 0⤋

zero

2006-10-29 00:02:37 · answer #3 · answered by locuaz 7 · 0⤊ 0⤋