0 the product of (= the result of multiplying) a whole number and all the whole numbers below it:
The factorial of five (5 x 4 x 3 x 2 x 1) is 120.
Four factorial (4 x 3 x 2 x 1) is 24.
1 relating to a factor (= a fact or situation that influences a result):
an experiment with a factorial design (= with two or more factors)
2 relating to factorials:
The number is calculated as a multiplication 1 x 2 x 3 x 4 x 5 x 6=720, or expressed in factorial mathematics: 6!=720.
The factorial of a number n is n*n-1 *n-2*... *1.
Assume that you have a simple method that calculates the factorial of a number.
This result can be written concisely in terms of factorials.
The sample was composed of the full factorial combination of sex, age and education with equal numbers in each group.
We began with the full factorial model involving all possible main effects and interactions.
The 3 x 2 factorial study was designed to assess the efficacy and safety of 3 different dose levels of doxorubicin.
The author appears to have assumed this number would grow at a factorial rate.
If, in the definition of t, you go from one term to the next by multiplication rather than addition, you get a factorial sequence.
