MCQ
Which of the following is an irrational number?
- A$\sqrt{23}$
- B$\sqrt{225}$
- C$0.3799$
- D$7.\overline{478}$
✓
Answer
- $\sqrt{23}$
Solution:
The decimal expansion of $\sqrt{23}=4.79583152...,$ which is non-terminating, nonrecurring.
Hence, it is an irrational number.
Hence, the correct opion is (a).
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