Tuesday, June 20, 2006

The three houses

Marking and reporting is almost over, so normal service (Humbug Hunting) should resume shortly. In the mean time, here's another brainteaser:

Three houses (1, 2 and 3) are all situated on one block of land, encompassed by a fence (with house 1 up against the fence). The owners of each of the houses want to build driveways (starting inside the fence) from their homes to their respective gates. To decrease the likelihood of collisions, they do not want the driveways to cross. Show the homeowners how they can achieve this - house 1 to gate A, 2 to B and 3 to C.

I'll link to an answer in the comments section in the next day or so. (And I know the position of the gates wouldn't make sense in real life, but it's a brainteaser people.)

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