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The Climbing Cat

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A cat is at the bottom of a 20 foot well.  (Don't worry, he's got lots of food, water, catnip and spitty cat toys down there.)

Each day, he climbs up 5 feet...

And each night, he slides down 4 feet.

How many days will it take him to reach the top of the well?

 

 

 

 

solution

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