Puzzles
Let the passenger train through!
A goods train, made up of a locomotive and 5 trucks, stops at a small station. The small station has a siding which the goods train can reverse into. The siding can hold an engine and two trucks or three trucks.
A passenger train arrives travelling in the opposite direction. How can they let it through? (The passenger train is too long to fit in the siding.)
If you enjoyed this puzzle, check out Sunday Afternoon Maths XXIII,
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