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Week 31 – Thursday


Week 31 – Thursday


A 440 yard long train, travelling at 80 mph, enters a 4.5 mile long tunnel.

How many seconds will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?




The answer to this puzzle will be revealed on 04.08.14

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Date answer published: 
Mon, 04/08/2014

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Posted in Mensa Brainteasers.