The person appears to be a/an East Asian Female, approximately 20 to 29 years old.
The factorial of 4 is expressed as 4! = 4 x 3 x 2 x 1 = 24.
The factorial of 4, denoted as 4!, is calculated as follows: 4! = 4 x 3 x 2 x 1 = 24. This means that the product of all positive integers up to 4 equals 24.