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What’s hiding behind all these calculations? Can you find the card that was picked?
For once, 13 is a lucky number! Make the most of it!
Ring ring! Give the cards a call, they’ll tell you which one is yours!
With a few operations, find the values of the three dice!
Tick tock! What time is it? Time to find your number!
This arithmetical triangle can guess your card every time!
Impress your friends with your amazing calculation skills!