Question

Is 7.8 a rational number

Answer 1

Yes, 7.8 is a rational number. A rational number is defined as any number that can be expressed as the quotient or fraction \( \frac{a}{b} \), where \( a \) and \( b \) are integers and \( b \neq 0 \).

In this case, 7.8 can be expressed as \( \frac{78}{10} \), where both 78 and 10 are integers, and 10 is not zero. Therefore, 7.8 is a rational number.