# Thread: How do I prove/disprove this?

1. ## How do I prove/disprove this?

How would I go about proving or disproving the following. If you multiply any two odd numbers together then you will always get an odd number?

2. (2m+1)(2n+1)=4mn+2m+2n+1=2(2mn+m+n)+1=2c+1

3. Thanks Julius thats been buggin me all morning.