Quandaries
and Queries 

In the following problem, if the letters A, B, C and D represent some number, what numbers would they represent so that: ABCD*4 = DCBA Name: Dee Level: Elementary 

Hi Dee, You have four numbers A, B, C and D and you know that What happens if none of them is zero? In this case if you multiply A, B, C and D together you get some nonzero number. I am going to call this number K. Then the equation is Thus the only way that ABCD*4 = DCBA can be true is if at least one of A, B, C or D is zero. Penny 

