Math CentralQuandaries & Queries


Question from phillip:

if you hold a mirror horizontally across my middle, i look the same in the mirror.if you hold a mirror between my second and third digits,i look the same in the mirror if you turn me upside down, i look the same. what 6 four-digit numbers could i be?

Hi Phillip,

When you hold the mirror horizontally across your middle you look the same so each digit in your number must have this property also. What digits look the same when you hold a mirror horizontally across their middle? I'll tell you one such digit, it is 8.


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