Multiple choice

Which of the following expressions represents an irrational expression?

  1. $\frac{\sqrt {10} \times \sqrt 6}{\sqrt {15}}$
  2. $\sqrt 3$ $\times$ $\sqrt 3$
  3. $\sqrt 2$ $\times$ $\sqrt 4$ $\times$ $\sqrt 8$
  4. $\frac{27}{3}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\sqrt 6 \times \sqrt 3 = \sqrt {18}$= 3$\sqrt 2$ is an irrational expression.

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