See also the Dr. Math FAQ: 0.9999 = 1 0 to 0 power n to 0 power
0! = 1 dividing by 0 Browse High School Number Theory Stars
indicate particularly interesting answers or good places to
begin browsing. Selected answers to common questions: Infinite
number of primes? Testing for primality. What is 'mod'? - How
Can a Number Raised to the Zero Power Be One? [01/23/2008] I
know that 3^7 * 3^0 is 3^(7+0) or 3^7. That means that 3^0 must
have a value of 1. But how is that possible? - How Does Base 4
Work? [11/06/2003] How does base 4 work? - How Many Mice, Cats,
and Dogs? [01/13/2003] You must spend $100 to buy 100 pets,
choosing at least one of each pet. The pets and their prices
are: mice @ $0.25 each, cats @ $1.00 each, and dogs @ $15.00
each. How many mice, cats, and dogs must you - How Many Primes
Are Known? [01/21/2003] How many prime numbers are currently
known? - How Many Rectangular Solids in a Cube? [09/13/2001] Is
there any standard way of finding out how many different
possible rectangular solids can fit