Which of the following is an irrational number?

  1. 0.overline3
  2. 0.09
  3. 1+ 3
  4. 49
Answer

C) 1+ 3

1+ 3 is irrational because a rational number plus an irrational number is irrational. 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