Posted by **audryana** on Wednesday, September 27, 2006 at 8:06pm.

use a direct proof to show that the product of two odd numbers is odd.

Proofs: (all the nos. i used are odd)

3 x 3 = 9

5 x 9 = 45

7 x 3 = 21

Yes, but you didn't prove the statement for "all" odd integers, only the odd integers you selected.

uhm..he didn't ask for *all* odd integers..

This is Audryana's first post

"use a direct proof to show that the product of two odd numbers is odd."

That is a general statement that means 'any' two odd numbers.

ya..so...that's wat i was saying 'any' not all..

Ok, I see you have a little to learn about logic. The terms 'any', 'for each' and 'all' are used interchangably in logic and mathematics to form universals. You provided examples, or particulars as they're called, but that didn't suggest any kind of proof. It only verified the statement for a couple cases, that's all I was trying to point out.

ok....thx for telling me that...

prove the square root of 2 is irrational

Can you show me how f of X function 6X-9 Is unto or one to one.

## Answer this Question

## Related Questions

- Geometry - Working on conjectures. The question is Conjecure: The product of any...
- discrete math - prove that if n is an integer and 3n+2 is even, then n is even ...
- odd and even functions - Using f is odd if f(-x) = -f(x) or even if f(-x) = f(x...
- Math - make a conjecture for the following show work the sum of an even and odd ...
- Maths - The first odd number can be expressed as 1 = 1squared - 0squared. The ...
- Discrete Mathematics - Show that the square of an oddnumber is an odd number ...
- Math - We call a natural number "odd looking" if all its digits are odd.How many...
- math check - Posted by TchrWill on Thursday, July 14, 2005 at 5:44pm. 2.)The sum...
- MS 300 - Suppose a and b are positive integers. Write a proof by contradiction ...
- math - Consider the following sums of numbers and how they are formed: 1 odd ...