0
Anonymous
If you think about the digits, you can rewrite them as ABBA, with A being one digit and B being another: A can be 1-9 and B can be 0-9. Since A has to be 1, B can be 0-9, leaving 10 palindromic numbers.
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2100
1111 is the only one.
1100
1000, 1020, 1040, 1060, 1080, and 1100
1001, 1012, 1023, 1034, 1045, 1056, 1067, 1078, 1089, 1100