Question

A and B set having same cardinal number and same element then it is called?

Answer 1

Answer:

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In mathematics, the cardinality of a set is a measure of the "number of elements" of the set. For example, the set ${\displaystyle A=\{2,4,6\}}$ contains 3 elements, and therefore {\displaystyle A}A has a cardinality of 3. Beginning in the late 19th century, this concept was generalized to infinite sets, which allows one to distinguish between the different types of infinity, and to perform arithmetic on them. There are two approaches to cardinality: one which compares sets directly using bijections and injections, and another which uses cardinal numbers. The cardinality of a set is also called its size, when no confusion with other notions of size is possible.

Answer 2

Answer:

if a is a proper subject of b then the cardjcal number of a is always to the cardical number of b

Step-by-step explanation:

The substance of set other than itself is called proper element