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Wes Carroll's Puzzler

20: The middle digit [**]

August 28, 2016 Wes Carroll
20: The middle digit [**]
Wes Carroll's Puzzler
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Wes Carroll's Puzzler
20: The middle digit [**]
Aug 28, 2016
Wes Carroll
How many three-digit numbers satisfy the property that the middle digit is the average of the first and the last digits? // Spiciness: ** out of ****
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How many three-digit numbers satisfy the property that the middle digit is the average of the first and the last digits? // Spiciness: ** out of ****