Final answer:
The decimal 0.002475 is a rational number because it can be written as a fraction, specifically 2475/1000000.
Step-by-step explanation:
The number 0.002475 is a rational number because it can be expressed as a fraction. In mathematics, a rational number is defined as any number that can be written as a quotient or a fraction №/a, where № and a are integers and a is not equal to zero.
The decimal 0.002475 is equal to 2475/1000000 which clearly shows the format of a numerator and a denominator, indicating that it is a rational number.