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.
Same as it means in other math: Factorial. Means multiply that positive integer by the integer before it, and the integer before that, etc, all the way down to 1. For example: 5! = 5 x 4 x 3 x 2 x 1 10! = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 Usually shows up when you're doing combinations and permutations in stats.