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What Day Is It Today?

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Author: Roya Salehi
Description: Math Fundamentals, difficulty level 2. Sophie tells the truth only on Monday, Tuesday, Wednesday, and Thursday. Her sister tells the truth only on Monday, Friday, Saturday, and Sunday. If they both confess to their mom that "Yesterday I lied," what day is it today?
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Problem page: /library/go.html?destination=446
Solution page: Problem #446

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