7
Take the total number of letters factorial, then divide by the multiple letters factorial (a and e). 7! / (2!*2!) or 1260.
7! = 7 × 6 × 5 × ... × 2 × 1 = 5040
It represents a factorial. A factorial is when you take each number up to value and multiply them. So factorial 3 is 1 x 2 x 3. Factorial 7 is 1 x 2 x 3 x 4 x 5 x 6 x 7.
1 factorial = 1
9 factorial = 9! = (9*8*7*6*5*4*3*2*1) = 362880
7*6*5*4*3*2*1=5040
factorial of -1
As we know product of no numbers at all is 1 and for this reason factorial of zero =1and we know factorial of 1=1
Zero factorial = 1
A factorial of a whole number is that number multiplied by all smaller whole numbers down to one. So 7 factorial (written 7!) means 7 x 6 x 5 x 4 x 3 x 2 x 1
An example in Java, to compute 10!: int factorial = 1; for(int i = 1; i < 11; i++) { factorial *= i; }
Factorial(0), or 0! = 1.