Question

What is the cardinal number of following sets?

$C=\left\{consonantsoftheEnglishAlphabet\right\}$

Answer 1

The number of distinct elements in a finite set is called the cardinal number of the set. It is denoted by $n\left(C\right)$

Given set:

$C=\left\{consonantsoftheEnglishAlphabet\right\}$

We know that there are $26$ Alphabets in the English in which $5$ are vowels and $21$ are consonants.

Therefore, Total number of element in the English Alphabet which is consonant is $21$

Hence, the cardinal number of the set $C=\left\{consonantsoftheEnglishAlphabet\right\}$ is $n\left(C\right)=21$