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Trailing Zeroes
Problem
13! = 13 
12 11 ... 2 1 = 6227020800, and it can be seen that 13! contains two trailing zeroes.
How many trailing zeroes does 1000! contain?
Problem ID: 174 (May 2004) Difficulty: 3 Star
13! = 13 12 11 ... 2 1 = 6227020800, and it can be seen that 13! contains two trailing zeroes.
How many trailing zeroes does 1000! contain?
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