1.what is the difference between the biggest and the smallest three-digit numbers each formed by different digits?
2.i am a palindrome.i am greater than eleven and less than fifty.i am an odd numbers?
3.i am the first three-digit palindrome.
4.i am a four digit palindrome.i have one in my thousands place,and a two in my hundreds place?
5. i am a palindrome greater than the number of days in a year and less than the product of 19 and 20?



1. 987-123= 864
2. 33
3. 101
4. 1221
5. 363
1 5 1