If a set has 510 non-empty proper subsets, then find the cardinal number of the set.

The cardinal number of the empty set is

Cardinal number of Sets

Cardinal number of null set is…………

A set X has 255 proper subests .Find its cardinal number .

The cardinal number of a set is 5. find the cardinal number of the power set.

The set does not have proper subset is

How many proper subsets in all are there of a set with cardrinal number 5?

If the cardinality of a set A is 4 and that of a set B is 3, then what is the cardinality of the set AUB?