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Number systems — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsNumber systems1 Mark
MCQ
Which of the following is an irrational number?
  • A
    $\sqrt{7}$
  • B
    $\frac{\sqrt{20}}{\sqrt{5}}$
  • C
    $\sqrt{\frac{4}{9}}$
  • D
    $\sqrt{64}$ 
✓

Answer

  1. $\sqrt{7}$
    Solution:
    Because it cannot be express in $\frac{\text{p}}{\text{q}}$ form Or fraction.

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