Humans are so smart that we can easily learn the difference between even numbers and odd numbers. And until a new study emerged, humans believed we were the only species capable of this feat ...

So 4 is an even number. An odd number cannot be shared equally into two groups. For example, these 3 cubes cannot be shared into two equal groups. You have a group of 2 cubes and a group with 1 cube.

Some math problems have been challenging us for ... We Can Change Computers Forever All primes after 2 are odd. Even numbers are always 0, 2, or 4 more than a multiple of 6, while odd numbers ...

Hidden among a sea of identical numbers is a single odd one, and if you can spot it in under 7 seconds, you might just be a math whiz ... is designed to challenge even the sharpest minds.

This column comes with a warning: Do not try to solve this math problem. You will be tempted. This problem is simply stated, easily understood, and all too inviting. Just pick a number, any number: If ...