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If n/2-3n/4+5n/6=21, then n=?(a) 30 (b) 42 (c) 36 (d) 28 |
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Answer» (c) 36 Explanation: Given n/2-3n/4+5n/6=21 On rearranging and taking L.C.M, (6n_9n+10n)/12=21 7n=21(12) n=36 |
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