Rudolph puts4 stars on a tree.
He colours each star either red or yellow.
* How many different ways can Rudolph colour his four stars?
BRAINTEASER SOLUTIONS, FROM P41
Solution: Sleigh ride
With 3 rows of 4 igloos, the shortest
route is 190 metres. For example:
With 4 rows of 5 igloos, the shortest
route is 350 metres. For example:
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