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Mar 15th, 2002, 11:03 AM
#20
Fanatic Member
Originally posted by kedaman
3- How many positive integers less than 1,000,000 have exactly one digit equal to 9 and have a sum of digits equal to 13?
9*(8+8*7+8C2)=828
Why is that? I manually checked all numbers below 1000000 and came up with 420. DerFarm also arrived at this conclusion. COuld you elaborate on how you arrived at this answer?
Digital-X-Treme
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[VBCODE]Debug.Print Round(((1097) - ((55 ^ 5 + 311 ^ 3 - 11 ^ 3) _
/ (68 ^ 5))) ^ (1 / 7), 13)[/VBCODE]
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