Final answer:
The set a=(22, 27, 32, 37) has four elements, hence the cardinal number of set a is 4.
Step-by-step explanation:
The question asks us to find the cardinal number for the set a which is given as (22, 27, 32, 37). The cardinal number of a set refers to the number of elements within that set. To find the cardinal number, we simply count how many elements are present.
In the set a, there are the following elements: 22, 27, 32, and 37. When we count these, we see that there are four elements.
Therefore, the cardinal number of the set a = (22, 27, 32, 37) is 4.