Problems based on Numbers Test 2

Concept:Irrational numbers cannot be expressed as a ratio of two integers.Explanation:A rational number can be written as $\frac{a}{b}$, where $a$ and $b$ are integers and $b \neq 0$.An irrational number cannot be written in this simple fraction form.Examples: $\sqrt{2}$ and $\pi$ are irrational, while $\frac{3}{4}$ is rational.Therefore, the correct statement is about irrational numbers.Answer:Option A: An irrational number is a real number that cannot be written as a simple fraction.