SOLUTION: Which of the following cannot be the difference between the three-digit numbers ABC and CBA, if A,B,and C are positive digits and A times C does not equal 0? A) -693 B) -198 C)

Algebra ->  Real-numbers -> SOLUTION: Which of the following cannot be the difference between the three-digit numbers ABC and CBA, if A,B,and C are positive digits and A times C does not equal 0? A) -693 B) -198 C)      Log On


   



Question 890079: Which of the following cannot be the difference between the three-digit numbers ABC and CBA, if A,B,and C are positive digits and A times C does not equal 0?
A) -693
B) -198
C) 495
D) 241
E) 792

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The difference between reversed number is always a multiple of 9
Divide each by 9, find the one that does not come out even, 241/9 ~ 26.8