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A certain brand of cereal is running a promotion where you can get 1 toy in each box of cereal purchased. There are 5 different toys. I wish to collect one set of these toys to give as a gift. Assuming the toys are randomly distributed among the boxes, how many boxes should I expect to buy before I have all 5 toys (theoretical probability) ?

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  1. 10 June, 10:47
    Buy as much as you can till you get all five will be the right thing to do because by change you'll get all five by luck
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