Manuals/calci/FACT

FACT(N)

• where, $N$ is a non-negative number whose factorial is to be found.

FACT() calculates the factorial of a number N as 1*2*.....*N.

Description

FACT(N)

e.g. FACT(3) displays 6 as a result.

• The factorial of a number N is the product of all positive integers, less than or equal to N. It is calculated as -

$N!=NX(N-1)X(N-2)X.....1$

• $N$ should be a positive integer. Else Calci displays #NUM error message.
• If $N$ is not an integer, it is truncated to calculate the factorial.
• The factorial of series of numbers can be calculated as -

e.g. FACT(1..5) calculates factorial of numbers from 1 to 5 and displays result as 1 2 6 24 120.

Examples

Function	Output
FACT(6)	720
FACT(4.7)	24
FACT(0)	1
FACT(1.1)	1

See Also

• FACTDOUBLE

References

• Factorial