Is 3 over 5 a rational or irrational number?

3 over 5 is a rational number because it can be expressed as a fraction of two integers, where 3 is the numerator and 5 is the denominator. Rational numbers are defined as numbers that can be written in the form ( \frac{a}{b} ), where ( a ) and ( b ) are integers and ( b ) is not zero. Since both 3 and 5 are integers and 5 is not zero, 3 over 5 is indeed rational.