Mathematics for IGCSE & O level - Number (Section 3 - No. 26)
Which of the following best describes an Irrational number?
A number that can be written as a fraction
A number that can be written as a fraction, where the numerator and denominator are not both integers
A number that cannot be written as a fraction.
A number that is an integer.
Explication
Irrational numbers cannot be written as fractions