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22 September, 08:14

Which number is irrational?

A. square root of 5

B. 0.3

C. 0.454545 ...

D. 0.777 ...

is it C?

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Answers (1)
  1. 22 September, 08:26
    0
    The answer is A.

    The square root of 5 is a nonrepeating and nonterminating decimal which makes it irrational. B is a terminating decimal so it is rational. C and D are rational because the decimals repeat.

    ps. 0.454545 ... is equivalent to 45/99
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