Think of a number from 1-15. See which of the cards below has your number written on it. If you tell your teacher the card(s) your number is on, s/he will immediately tell you your number. How does s/he do this? Can you discover the secret?
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Think of a number from 1-15. See which of the cards below has your number written on it. If you tell your teacher the card(s) your number is on, s/he will immediately tell you your number. How does s/he do this? Can you discover the secret?
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