Which of the following is an irrational number?

  1. 2
  2. 1625
  3. 0.75
  4. 0.overline3
Answer

A) 2

2 is irrational because 2 is not a perfect square. The others can be written as pq (e.g. 49 = 7, 0.overline3 = 13). SLO M-09-A-02 · Knowledge

Mathematics MCQ · More Real Numbers MCQs · Practise