0
There are the same number: any twelve digit palindrome is just an eleven digit palindrome with its central digit repeated. In general, if we are considering numbers of n digits: For even values of n, the number of palindromes is 9 x 10n/2 - 1 For odd values of n, the number of palindromes is 9 x 10(n-1)/2
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Which 2-digit numbers have palindromic squares?
11
Which 2 digit numbers have palindromic squares?
11
Is a 10 digit palindromic number bigger than a 11 digit palindromic number?
No.
Are there more 10-digit or 11-digit palindromic numbers?
-1
What is the sum of the digits of the largest 4-digit palindromic number which is divisible by 15?
-11
Which 2-digit numbers have palindromic squares?
11
Which 2 digit numbers have palindromic squares?
11
Is a 10 digit palindromic number bigger than a 11 digit palindromic number?
No.
What is the only two-digit palindromic prime?
The only 2-didgit palindromic prime is 11.
What is the only two digit palindromic prime number?
11
What is a palindromic prime number?
Aside from single digit primes, the first ten palindromic prime numbers are: 11 101 131 151 181 191 313 353 373 383 727
Are there more 10-digit or 11-digit palindromic numbers?
-1
Are all palindromic numbers divisible by 11?
No. For instance, 101 is not divisible by 11.
What is the sum of the digits of the largest 4-digit palindromic number which is divisible by 15?
-11
How many palindromic numbers are between 10 and 200?
19
Is there a palindromic number that can't be divided by 11?
Yes, there are many palindromic numbers that are not evenly divisible by 11 such as 181, 232, 454, 585, 10001, 17871, etc.
How many palindromic numbers are there between 0 and 100?
There are 9 palindromic numbers between 0 and 100: 11, 22, 33, 44, 55, 66, 77, 88 and 99.
