That's an infinite list.
There are 90 palindromic numbers between 100 and 1000
The sum of two palindromic numbers is not necessarily a palindromic number. For example, adding the palindromic numbers 121 and 131 gives 252, which is also a palindrome. However, adding 121 and 122 results in 243, which is not a palindrome. Therefore, while some sums of palindromic numbers can be palindromic, it is not a guaranteed outcome.
There are 9 palindromic numbers between 10 and 100. These are 11, 22, 33, 44, 55, 66, 77, 88, and 99. A palindromic number reads the same forwards and backwards, and in this range, all such numbers are double-digit numbers where both digits are the same.
The sum of all palindromic numbers from 1001 to 9999 is 495000.
As 20569.8 is not palindromic, any number that is like it must contain that property and similarly be non-palindromic, so no.
There are not just 13 non-palindromic numbers. Most numbers are non-palindromic.
1001,1111,1221,1331,1441,1551,1661,1771,1881,1991,2002,2112,2222,2332,2442,2552,2662,2772,2882,2992,3003,3113,3223,3333,3443,3553,3663,3773,3883,3993,4004,4114,4224,4334,4444,4554,4664,4774,4884,4994: 40 numbers in all.
There are 90 palindromic numbers between 100 and 1000
No.
No. For instance, 101 is not divisible by 11.
Nobody went out to create them: some numbers simply happen to be palindromic and others don't.
The sum of all palindromic numbers from 1001 to 9999 is 495000.
infinite
777717711771817718817...
No.
there are 10 palindromic numbers between 9000 and 10000 9009,9119,9229,9339,9449,9559,9669,9779,9889,9999!!!
As 20569.8 is not palindromic, any number that is like it must contain that property and similarly be non-palindromic, so no.