Associate each letter with the correct number, given that:
 If A is 1, then B is not 3.
 If B is not 1, then D is 4.
 If B is 1, then C is 4.
 If C is 3, then D is not 2.
 If C is not 2, then D is 2.
 If D is 3, then A is not 4.
The following satisfy all of the bullets but may not be the only solution.
A can be any number
B=1, C=4, D=2
If they are supposed to be different numbers from 1 to 4 then A=3

Posted by Jer
on 20130103 11:03:12 