Question

calcule:
a) 6!
b)4! - 3!

Answer 1

a)
6! 
= 6.5.4.3.2.1
= 30.24
= 720
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b)
4! - 3!
4.3.2.1 - 3.2.1
= 24 - 6
= 18
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Answer 2

a) 6*5*4*3*2*1 = 720