Calcolatore Fattoriale

How to use it

1. {'step': 1, 'description': 'Start with n = 8'}
2. {'step': 2, 'description': 'Multiply: 8 × 7 = 56'}
3. {'step': 3, 'description': 'Continue: 56 × 6 × 5 × 4 × 3 × 2 = 40,320'}
4. {'step': 4, 'description': 'Result: 8! = 40,320 different arrangements'}

Common mistakes

• ⚠️ Forgetting that 0! = 1 by definition (not 0)
• ⚠️ Entering values above 170 causing JavaScript Infinity
• ⚠️ Confusing factorial with exponentiation (8! ≠8⁸)

Worked example

Calculate 8! (8 factorial) for permutation and combination probability problems

The risultato ({risultato}) is n! = n × (n-1) × (n-2) × ... × 2 × 1, representing the number of ways to arrange n distinct items.

Input guide