To classify the number −1005:
- Real: Yes, it is a real number.
- Rational: Yes, it can be expressed as a fraction (−1005/1), which makes it rational.
- Integer: Yes, it is an integer because it is a whole number (though negative).
- Whole: No, it is not a whole number because whole numbers are non-negative.
Given this classification, the correct set of numbers that includes −1005 is:
Real, Rational, Integer.