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options: a) $0$ b) $48$ c) $120$ d) $144$ MyApproach: RESULT has $2$ vowels and $4$ consonants. $2$ vowels can be arranged in $3$ places in $3C2$ ways and the rest can be arranged in $4!$ ways. Therefore $4!$ . $3C2$=$72$
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Discussion :: Permutation and Combination - General Questions (Q.No.13)
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