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[(49.88% of 320.11) × (34.85% of 460.24)] ÷ √783. = [(50% of 320) × (35% of 460)] ÷ √784 = [(0.5 × 320) × (0.35 × 460)] ÷ 28 = [160 × 161] ÷ 28 = 25760 ÷ 28 = 920 Answer: C
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