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| Math Central | Quandaries & Queries |
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Question from jp, a student: How many four-digit numbers are there? |
JP,
It depends on what you mean by a four-digit number. Is 0033 a four-digit number? Is 0000? I can tell you that the largest four-digit number is 9999. If 0000 and all the four-digit numbers with leading zeros are four-digit numbers then all the numbers from 0000 to 9999 inclusive are four-digit numbers. If the four-digit numbers with leading zeros are not four-digit numbers then you need to subtract all the numbers from 0000 to 0999 inclusive.
Penny
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