a, 3! = 1 . 2 . 3 = 6
b, n! = n . ( n + 1 ) . ( n + 2 ) . .......
c, 6! = 1 x 2 x 3 x 4 x 5 x 6 = 720
A: 3!=1.2.3=6
B: n!=1.2.3....n
C: 6!=1.2.3.4.5.6=600
a) 3! = 1.2.3 = 6
b) n! = 1.2.3.4..n
c) 6! = 1.2.3.4.5.6 = 720
Nhầm phần b
b, n! = 1 . 2 . 3 . 4 . ........ . n
Sorry nha