There are 10 3-digit odd palindromes that are divisible by five.
There are 90 four-digit palindromes
There is 90 four digit palindromes.
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.
A three digit number cannot be divisible by a 5 digit number - in any base.
There are 900 6-digit palindromes.
128.
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There are 17 palindromes between 1 and 1000 that are divisible by 11
There are 20 palindromes between 10,000 and 99,999 that are divisible by 25.
There are 20 palindromes between 10,000 and 99,999 that are divisible by 25.