# Odd And Even Numbers - 2

Logic Level 2

Given that $$a$$, $$b$$, $$c$$, and $$d$$ are 4 positive integers.

• $$ab =$$ odd
• $$ab + cd =$$ odd

How many odd numbers are possible at most?

Also See : Odd And Even Numbers - 1 and Odd And Even Numbers - 3

For more of these see my set Self Created Stuff and $${\color{blue}Logical} \space {\color{green}Reasoning}$$

×