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cyclozine
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1 - 01-26-2005, 11:17 PM
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how many positive integers less than 1,000,000 have the sum of their digits equal to 17?

i understand how to find # of compositions of an integer w/ a restriction using weight & generating functions but it is beyond me how any of that can be applied to this question.
 
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Ben Dover
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2 - 01-26-2005, 11:19 PM
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Make a list!
 
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Smay
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3 - 01-26-2005, 11:21 PM
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http://home.att.net/~numericana/answ....htm#possesses

Read the one I linked to, plus the one under it
 
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cyclozine
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4 - 01-26-2005, 11:24 PM
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smay u r the man
 
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