Question

how to show 0! = 1?

Answer 1

please any one help me?

Answer 2

Can you use n!=n*(n-1)! to show 0!=1?

Answer 3

how to use it?

Answer 4

Replace n with 1

Answer 5

okay
1! = 1(1 - 1)!

Answer 6

so what would be the next?

Answer 7

Think about it for a second. I have already given too much away.

Answer 8

so i will get 1! = 1*0!
==> 1 = 0!
ohh so we have 0! = 1

Answer 9

4! = 5!/5 = 120/5 = 24
3! = 4!/4 = 24/4 = 6
2! = 3!/3 = 6/3 = 2
1! = 2!/2 = 2/2 = 1
0! = 1!/1 = 1/1 = 1

Answer 10

am i correct?

Answer 11

yep

Answer 12

thx for you help! :)

Answer 13

np