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tmua.fyi Mock Paper 2 · Q1

Paper 2Logic & proof

Exactly one of the following statements is true. Which one?

A144=±12\sqrt{144}=\pm12
BFor every real number xx, x2=x\sqrt{x^2}=x.
C0.9‾=10.\overline9=1
D30=03^0=0
EThe product of any two irrational numbers is irrational.

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