Question

a b c d take time 1 , 2 ,5,10 mins respectively to cross a bridge. if only two of then can cross the bridge at a time, how will they cross the bridge if a bomb is placed near them which has a timer of 17 minutes .....answer asap

Answer 1

B and D will go together...B will cross within 2 minutes when D will be coming behind B...so it will take 10 minutes for both of them to cross the bridge...after that A and C can go separately...so they will reach in 16 minutes.

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