Write the cardinal number of each of the following sets:

B = Set of numbers on a clock-face.

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Solution

Step: Finding the cardinal number of the given set

Given B = Set of numbers on a clock-face

There are 12 numbers on a clock face.

$∴$ Total elements in the set B = 12.

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

Hence, the cardinal number of set B is 12.

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