That's an infinite list.
There are 90 palindromic numbers between 100 and 1000
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.
11
There are 900000 of them.
There are 90 palindromic numbers.
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.
No.
infinite
777717711771817718817...
there are 10 palindromic numbers between 9000 and 10000 9009,9119,9229,9339,9449,9559,9669,9779,9889,9999!!!