fac
to
rial
Plural
factorials
1
the product of all positive whole numbers from 1 to a given number
- The factorial of 5 is calculated as 5!=5×4×3×2×1=120.
- In combinatorics, the factorial is used to determine the number of possible permutations of a set.
- To solve the problem, you need to find the factorial of 7.
- The formula for combinations includes the factorial of the number of items.
- Factorials are essential in the binomial theorem for expanding expressions.