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anonymous
 5 years ago
how can 0!=1! ? doesn't it defy the fundamentals of mathematics?
anonymous
 5 years ago
how can 0!=1! ? doesn't it defy the fundamentals of mathematics?

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mathteacher1729
 5 years ago
Best ResponseYou've already chosen the best response.0It's a definition. Everything else works if we define it to be so. :)

mathteacher1729
 5 years ago
Best ResponseYou've already chosen the best response.0Also, there is only one way to rearrange a set of zero objects.

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.1First of all n! is define as the product of the first n natural numbers. Since 0 is not a natural number, we can't use that definition. Then it is up to use to give a meaning to 0!. Then if we define 0!=1 everything works nicely.

mathteacher1729
 5 years ago
Best ResponseYou've already chosen the best response.0Here is another nice answer: http://mathforum.org/library/drmath/view/57128.html

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that was quite enlightening! thank you both
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