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MathNet 2016-part-05 — 184 problems (EN–VI) Question 149

Math Olympiad Vault · MathNet 2016-part-05 — 184 problems (EN–VI)

Question 149

Which one of the following is not a rational number?
(A) $\sqrt{4}$
(B) $\pi^0$
(C) $\sqrt{6.25}$
(D) $\sqrt{14}$
(E) $\sqrt{0.49}$