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[Video Solution] Four friends A, B, C and D need to cross a bridge in the night. A maximum of ... | ASPIRE STUDY

Four friends A, B, C and D need to cross a bridge in the night. A maximum of 2 people can cross at a time. They have only one lamp. A takes one minute to cross the bridge. B takes 2 minutes, C takes 8 minutes and D takes 11 minutes to cross the bridge respectively. A pair must walk together at th... | Watch the step-by-step video solution for this NIMCET PYQ.

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