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Graduation

graduation

Having just received their degrees, ten friends line up in the sunshine to have their photo taken when a gust of wind blows off their morterboards (caps). Each retrieves a cap at random during the ensuing scramble. What is the probability that exactly nine of them retrieve their own cap?



Zero. If nine retrieve their own cap then the 10th must do also.

 

Category: Math Problems

2 Responses to Graduation

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