Let's classify each number as rational or irrational:
- -15: Rational (It can be expressed as a fraction, for example, -15/1.)
- 3.67: Rational (It can be expressed as 367/100.)
- √25: Rational (Since √25 = 5, which is an integer.)
- 2π: Irrational (π is an irrational number, and multiplying it by 2 does not result in a rational number.)
- 4.8: Rational (It can be expressed as 48/10 or 24/5, which are both fractions.)
- √12: Irrational (Since √12 can be simplified to 2√3, and √3 is irrational.)
So the classifications are:
- Rational: -15, 3.67, √25, 4.8
- Irrational: 2π, √12