Question

The cardinal number of the set {cow, horse, goat, chicken, rooster} is _________.

Answer 1

farm.

Answer 2

the number of elements; but do we include the null set as part of it?

Answer 3

5?

Answer 4

lol just kidding just kidding.

Answer 5

i believe it is 5.

Answer 6

5 is my guess too :)

Answer 7

null set has a cardinality of 1 .... so the point is moot

Answer 8

ok thanks man because that what i got

Answer 9

many years have passed since i did sets.....

Answer 10

The cardinality of a set is the number of items in that set:
\[A=\left\{ x_{1}, x_{2}, ..., x_{n} \right\}\]\[\left| A \right|=n\]

Answer 11

null set has cardinality zero