What is 1! (1 factorial)?
1 — 1 factorial (1!) equals 1. See the full expansion and step-by-step calculation.
Respuesta
1
1! = 1 = 1
Solución Paso a Paso
1
1! is defined as 1 by convention
2
The factorial of 1 equals 1
3
Therefore, 1! = 1
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