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Four couples have to cross a river by small boat. At a time only 4 person can travel...

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Four couples have to cross a river by small boat. At a time only 4 person can travel and it takes 15 min to cross river from one bank to another. Find minimum time to cross the river by them?

posted May 10, 2015 by Salil Agrawal

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3 Answers (Check Answer ▼)





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