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Grade 11
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Magical Calculations

With the help of a few calculations, the magician identifies the chosen card. Will you be able to do the same?

Mathemagic

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The Birthdays

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

Riddle

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Bread Slice

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

Riddle

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Oh, How Time Flies By!

Can you figure out Gabrielle's birthday?

Riddle

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Lucky 13

The kings allow the magician to succeed in his trick. How does it work? What does the number 13 represent in this trick?

Mathemagic

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5 Victories

Is it really possible to achieve 5 victories in a single trick? After a few manipulations, the magician manages to find the 5 originally chosen cards. Impressive!

Mathemagic

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The Thief

Is it possible to find a digit that was stolen? Sure, when you know how! Can you figure it out?

Mathemagic

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Bridge Crossing

Our friends need to cross a bridge as quickly as possible — but there are rules to follow. Watch out! Only two people can be on the bridge at the same time, no more.

Riddle

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Stained Glass

The principal of your school is having a stained glass window made. Can you figure out the area of the blue region in the stained glass to help her? It’s your turn!

Riddle

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Blame It On The Watch

The great Justine Believer is performing tonight. Her biggest fans — Tommy, Billy, and Julie — are so excited about the show that they’ve set their watches to make sure they arrive on time. Everything seems perfect… but there’s just one problem: two of the three watches are broken. When will they meet up?

Riddle

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The Bus

Algebra, arithmetic, and logic — it’s all there! Well, it all can be there. It’s up to you to solve this puzzle your own way.

Riddle

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The Legend Of The Betting Chief

After opening his chest, legend has it that the leader of the adventurers let out a roar so loud it was heard across the entire continent. Can you guess what the leader won?

Riddle