Match the number on the left with the proper combination of number types on the right.

1. 15
2. zero
3. Sqrt 15 (Sqrt stands for the square root of a number)
4. -10
5. 5/4
a. Real, Rational, Integer, Whole, Natural or Counting
b. Real, Rational, Integer
c. Real, Irrational
d. Real, Rational
e. Real, Rational, Integer, Whole