Question

Determine the cardinality of the given set.​

Answer 1

1.) 9

2.) 15

3.) 7

Explanation:

1.) There are no repeat letters, so the cardinality is the number of letters, here 9

2.) There's half the numbers from 1 to 30 in the set, so 30/2 = 15

3.) There are 7 distinct days of the week, so the answer is 7