Explanation:
Exp: A
an irrational number
Rational Numbers say \(\frac{4}9,{\frac{\text{p}}{\text{q}}},\sqrt{4,}\) fraction, whole numbers, terminating decimal, repeating decimal, perfect square, can be expressed as a ratio of two integers provided the denominator is not equal to zero Irrational Numbers, \(\sqrt{2},\sqrt{5},\sqrt{7},\pi\) not a fraction, decimal does not repeat, decimal does not end, non-perfect square, we cannot express as a ratio but both can be expressed as decimal numbers.
The difference between a rational and an irrational number is always an irrational number.
e.g. rational - irrational = irrational say \(2-\sqrt{2}\) = irrational