The set of whole numbers is not a subset OF-- I WILL MARK BRAINLIEST

A. Natural Numbers
B. Integers
C. Rational Numbers
D. Real Numbers

How do i do this? i don’t understand

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

3382-299=3383- ? fill in the blank?