SOLUTION: a boy has 20 pennis, 8 nickels, 10 dimes and 15 quarters. how many coins must boy take from his collection to be certain that he has 12 coins of same kind

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Question 1078365: a boy has 20 pennis, 8 nickels, 10 dimes and 15 quarters. how many coins must boy take from his collection to be certain that he has 12 coins of same kind
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
11 + 8 + 10 + 11 + 1 = 41
(penny) + (nickel) + (dime) + (quarter) + (extra to make sure that there are 12 of one kind)