Write the cardinal number of each of the following sets:

A = Set of days in a leap year.

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Solution

Step : Finding the cardinal number of the given set

Given A = Set of days in a leap year

Since the number of days in a leap year is 366.

$∴$ Total elements in the set A is 366.

We know that the cardinal number of a set is the number of elements in it.

Hence, the cardinal number of set A is 366.

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