Question

What is the cardinal number of B.

B = ( )

Answer 1

In mathematics, cardinal numbers, or cardinals for short, are a generalization of .... and we can construct the set {a,b,c} which has 3 elements.

Answer 2

Answer:

B={ }

=》The number of elements present in a set is called the cardinal number of a set.

The cardinal number of set B is 0 because set B is a null set which doesn't contain any elements.

I hope it is helpful.

Be happy

Keep smiling

Enjoy your life.