A group of four people has to cross a bridge. It is dark, and they have to light the path with a flashlight. No more than two people can cross the bridge simultaneously, and the group has only one flashlight. It takes different time for the people in the group to cross the bridge:
Antonioni crosses the bridge in 1 minute,
Bergman crosses the bridge in 2 minutes,
Chaplin crosses the bridge in 5 minutes,
Dovzhenko crosses the bridge in 10 minutes.
Bergman crosses the bridge in 2 minutes,
Chaplin crosses the bridge in 5 minutes,
Dovzhenko crosses the bridge in 10 minutes.
1 comment:
1) A + B cross
2) A comes back
3) C + D cross
4) B comes back
5) A + B cross
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