Question

To which sets of real numbers does zero belong?
a. natural numbers, integers, and irrational numbers
b. whole numbers, integers, and irrational numbers
c. natural numbers, integers, and rational
d. whole numbers, integers, and rational

Answer 1

Zero belongs to the following sets of real numbers:

- Whole numbers (0, 1, 2, 3, ...)
- Integers (..., -2, -1, 0, 1, 2, ...)
- Rational numbers (any number that can be expressed as a fraction, which includes 0 since it can be expressed as 0/1)

Therefore, the correct choice is:

**d. whole numbers, integers, and rational.**