Out of the numbers

MATHEMATICS · Single correct · CBSE · Mathematics · Number Systems · Number Systems

Problem

Out of the numbers 4,  0.333…,  18,  78\sqrt{4},\;0.333\ldots,\;\sqrt{18},\;\dfrac{7}{8}, how many are rational? (a) 2 (b) 4 (c) 3 (d) 1

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