HOW DID YOU KNOW - Rules and Regulations

Once a month, Motionbox presents a 5-day trivia hunt called How Did You Know? on mentalfloss.com.

Starting on the last Tuesday of the month, we present four challenges, one per day.

You must have answers for all of the challenges and tell us how you arrived at the answers in order to qualify for the final puzzle.

The final puzzle is presented the following Monday at 8 pm ET, which gives you the weekend to work on any missing pieces to the previous four days' challenges.

The first person to e-mail in all the correct answers to all of the challenges and the final puzzle, including ALL of the questions presented in the final puzzle, is named the winner.

Two random winners are also named per month. To qualify for a premium subscription on motionbox.com, you only need to submit answers. Right or wrong, you still qualify.

To qualify for the HD cam drawing, all you have to do is submit all the correct answers within 24 hours of the final puzzle post (day 5).

Periodically, we also award t-shirts from our store to those who are creative with their answers. See examples here (scroll down) and here (scroll down).

Be sure to fan us over on our Facebook page to stay up-to-date with the latest challenges and rules.

Still have questions?

Feel free to be in touch via e-mail.