Identify which condition is necessary for a number to be rational. (1 point)

• It must not be negative.
• It must be written as a fraction.
• It must not be an endless decimal.
•It must be able to be expressed as an integer divided by a nonzero integer.

1 answer

The necessary condition for a number to be rational is:

• It must be able to be expressed as an integer divided by a nonzero integer.

This means that any rational number can be written in the form of \(\frac{a}{b}\), where \(a\) and \(b\) are integers and \(b\) is not zero.