All sequences of the form XYX or XXX are palindromes: thus 000, 010, 020 … through 090, and again for every other digit (101, 111, 121, … 191). There are ten of these for each digit, none of which repeat, so 100 total.
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There are 10 3-digit odd palindromes that are divisible by five.
90
90 of them.
There are 90 four-digit palindromes
90
There are 10 3-digit odd palindromes that are divisible by five.
90
90 of them.
There are 90 four-digit palindromes
90
There is 90 four digit palindromes.
Five of them.
For there to be palindromes, each digit must be replicated. Therefore there are at most three distinct digits.If there are 3 pairs of different digits, then there are 6 palindromes. If there can be more duplicate digits, then there are 27 palindromes.
There are no four-digit perfect squares that are palindromes.
There are 900 6-digit palindromes.
There is: 101,111,121,131,141,151,161,171,181,191 202,212,222,etc... 999 There are 90 palindromic 3 digit numbers
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