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Happy birthday! A riddle where you have to figure out the maximum number of friends present at a party — with a rather strange clue.

How can you slice a loaf of bread into 8 pieces using only 3 cuts of a knife?

Can you figure out Gabrielle's birthday?

No matter the moves made on a 3 by 3 grid, the magician will force you to end up exactly where he wants — without even looking!

Seeing through dice might be a challenge for a skilled magician — but calculating the sum of certain faces is a challenge for a true mathemagician.

A simple balloon-shaped path hides a surprising magic trick. Can you figure it out?

Does this trick work every time? How can you make it happen? Bring in the clock, and the trick is done.

Ring ring! Call the cards to find the one the spectator picked.

Let the participants hold onto the cards, flip them as many times as they like, and arrange them in any order. Then, by asking just one question, determine the total of the numbers they’ve chosen.

Charles and Stéphanie are having trouble with their watches, which are broken. However, even though both are broken, it’s still possible to find the correct time! How can that be done?

William wants to go play at Gabrielle’s place, who lives in the same building as he does. Using a few clues, figure out which floor Gabrielle lives on.

Luc is a piggy bank collector — everyone has their passions! One morning, he gets tired of hoarding money and decides to empty the contents of all his piggy banks.