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Archive for December, 2012

A chess board problem

Posted by Chris under Logic (3 Responds)

If no row, column or diaganol can have more than five pieces on it, what is the maximum number of squares that can be occupied on a chess board?
If you want to show a solution, use “_” and “X” for empty an occupied. Whatever you use, I’ll make sure it aligns (within 24 hours of [...]

The Oil Problem

Posted by ragknot under Tom (8 Responds)

An oil well being drilled in flat prairie country struck pay
sand at an under ground spot exactly 21,000 feet from one corner of a rectangular plot of farmland, 18,000 feet from the opposite corner, and 6000 feet from a third corner.
How far is the underground spot from the fourth corner ?

Santa Clause 3

Posted by ragknot under Tom (13 Responds)

Slight change from the movie question.
Two flying raindeer leave the North Pole. One flies South at 20 mph, the other flies to the right at 50 mph. How many hours does it take for them to be 210 miles apart?

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