Aresearch.214
net.general
utzoo!decvax!ucbvax!mhtsa!research!sjb
Fri Jan 22 18:12:29 1982
Factorial Query
This really has nothing to do with USENET (I guess) but has
been bugging me all day and I would really like an answer:
On calculators I've seen in school, when you try to get the
factorial of 0 (0!), it says 1.  Now, I fail to see why 0
factorial is one.  Then, I look in the manual for the calculator
and it says:  By definition, 0! = 1 (or, 0! == 1)
WHY?