x, a, z, and b are single digit positive integers. x = a/3. z = b/3. (10a + b) – (10x + z) could NOT equal  Choose the correct choice from the following.
A) 33
B) 22
C) 54
D) 78
E) 110
1) firstly we are not given that all are different integers..   2) since each is a positive single digit integer and x=a/3... Z=b/3   so in (10a + b) – (10x + z) ..   10a+b can be   33,66,99,132..   10x+z can be   11,12,21,22..   ans 33
<result>A</result>
x, a, z, and b are single digit positive integers. x = a/3. z = b/3. (10a + b) – (10x + z) could NOT equal