This article invites you to get familiar with a strategic game called "sprouts". The game is simple enough for younger children to understand, and has also provided experienced mathematicians with significant food for thought.
A paradox is a statement that seems to be both untrue and true at the same time. This article looks at a few examples and challenges you to investigate them for yourself.
Weekly problem 48 - 2006
What kind of number do you get when you add two odd numbers together?
How about adding an odd number to an even number?
Can you use these results to help you to see what is happening in your addition of two odd numbers and one even number?