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If (x=0.454545\ldots) then (x) is

Answer and explanation

Correct answer: Rational

In the decimal 0.454545..., the block 45 repeats continuously, so it is a recurring decimal. Every recurring decimal is rational; here, 0.454545... = 45/99 = 5/11. It is neither an integer nor a natural number, while irrational numbers have non-terminating, non-recurring decimal expansions. Exam tip: A terminating or recurring decimal is always rational.

Related tags

Real NumbersRational NumbersRecurring DecimalsDecimal ExpansionNumber SystemsDecimal RepresentationMathematicsClass 9 Mcq

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