Home » Which of the following is not a rational number?Which of the following is not a rational number? Which of the following is not a rational number? A. -5 B. (sqrt{4}) C. (3frac{3}{4}) D. (sqrt{90}) Correct Answer: Option D Explanation Related Posts What is 3.875 as a Fraction? – Decimal to Fraction Conversion What is 9.6 as a Fraction? – Decimal to Fraction Conversion What is 2 as a Fraction? – Decimal to Fraction Conversion What is 0.875 as a Fraction? – Decimal to Fraction Conversion What is 0.625 as a Fraction? – Decimal to Fraction Conversion What is 0.6 as a Fraction? – Decimal to Fraction Conversion