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Wechselfreund
1 year ago

Think about it – one way away.

Example 5! *6 = 6! = (5+1)!

Delicou
1 year ago

so (n+1)!=(n+1)n!

Why? Because look there: 3!= (2+1)!= 1*2*3 = (1*2)*(2+1)=2!*3