Discrete math proofs help.

  • Thread starter thecleric
  • Start date
  • #1
5
0

Main Question or Discussion Point

If m and n are positive integers, (mn)!=m!n! Prove or disprove.

its so obviously true i can't prove it. anyone help?

-also-

Prove: The square root of a prime integer is an irrational number.

any help?
 

Answers and Replies

  • #2
1,030
4
(3*2)! = 720 =/= 3!2! = 12

So it's actually FALSE.
 
  • #3
5
0
hah wow, that shows how long i haven't slept.

any idea on the 2nd question?
 
  • #4
1,030
4

Related Threads on Discrete math proofs help.

  • Last Post
Replies
4
Views
12K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
3
Views
4K
  • Last Post
Replies
0
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
5
Views
2K
Replies
2
Views
2K
Replies
1
Views
674
  • Last Post
Replies
1
Views
2K
Top