Creeping like a Snail Up the SSRN

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Jose Angel Garcia Landa Author Rank is 1,274 out of 435,098


Creeping up, and creeping down. There's a riddle about a snail which goes thus: We have a wall 10 metres high. A snail creeps up 3 metres every day, and creeps down 2 metres every night. How many days will it take him to reach the top of the wall? 

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