Sort the following sets as finite & infinite sets. A) The set of all integers B) The set of days in a week C) A={X:X is a multiple of 5} D) B={X:X E Z,X <-1} E) D={X:X is a prime number}

Finite Sets:

- B) The set of days in a week (7 elements)
- C) A={X:X is a multiple of 5} (infinitely many elements, but can be counted by the integers)

Infinite Sets:

- A) The set of all integers (infinitely many elements, cannot be counted)
- D) B={X:X E Z,X <-1} (infinitely many elements, cannot be counted)
- E) D={X:X is a prime number} (infinitely many elements, cannot be counted)