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How many 4 digit palindromes contain both the digits 1 and 2
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How many 4 digit palindromes contain both the digits 1 and 2
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Nov 20, 2016
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How many 4 digit palindromes contain both the digits 1 and 2
Mathematics
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Ali Bayat
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Ali Bayat
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What a clever sneaky little problem !
There can only be
two of them
: 1221 and 2112 .
Johnstaveley
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Nov 24, 2016
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Johnstaveley
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