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Q: How many digit palindromes numbers are there?

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90

There are 90 such numbers.

90

There are 90 four-digit palindromes

There is 90 four digit palindromes.

899100 of them. Only 900 of the 900000 are palindromic.

There are no four-digit perfect squares that are 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

There are 900 6-digit palindromes.

90000. With 10 digit palindromes, the last 5 digits are the same as the first 5 digits in reverse, eg 12345 54321. So it comes down to how many 5 digit numbers are there? They are the numbers "10000" to "99999", a total of 99999 - 10000 + 1 = 90000.

There are 10 3-digit odd palindromes that are divisible by five.

90 of them.

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