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Cardinality of Sets

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Question

Find the cardinal number of the following sets:
$A_{1} = {- 2, - 1, 1, 3, 5$ }

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Solution

Step : Find the cardinal number of the given set
Given: $A_{1} = {- 2, - 1, 1, 3, 5$ }

Number of elements in set $A_{1} = 5$

We know that the number of distinct element in a finite set is called its cardinal number.

Hence, the cardinal number of set $A_{1}$ is 5.

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Cardinality of Sets

Standard VII Mathematics

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