The combustion of the hydrogen and of the oxygen at the point of the cylinder produces solely the vapor or steam of water. Five Weeks in a Balloon by Verne, Jules View in context.
Factorial number system. In combinatorics, the factorial number system, also called factoradic, is a mixed radix numeral system adapted to numbering permutations. It is also called factorial base, although factorials do not function as base, but as place value of digits.
If the number is zero, its factorial is one. To calculate the factorial of any number that is larger than zero, you must calculate the factorial of at least one other number. The function must call itself for the next smaller number before it can execute on the current number. This is an example of recursion.