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How many 4 digit palindromes are there?

 Dec 19, 2019
 #1
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There are 90 four-digit palindromes

 Dec 19, 2019
 #2
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If you are refering to number sequences and not numbers then the first digit can be zero.

In which case you have

10*10=100 ways

 

If you are talking numbers then the first digit cannot be zero so it will be

9*10 =90

 Dec 22, 2019

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