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Cereal Gift

Probability puzzles require you to weigh all the possibilities and pick the most likely outcome.

 

Puzzle ID:#8806
Fun:*** (2.22)
Difficulty:*** (2.65)
Category:Probability
Submitted By:lesternoronha1****
Corrected By:Winner4600

 

 

 



There is a free gift in my breakfast cereal. The manufacturers say that the gift comes in four different colors, and encourage one to collect all four (thus eating lots of cereal). Assuming there is an equal chance of getting any one of the colors, what is the expected number of boxes I must consume to get all four?




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