If ab represents a positive two-digit number, where a and b are one-digit integers, which of the following CANNOT be true?	Pick one
A) ab = 0  B) a + b = 0  C) a – b = 0  D) b – a = 0  E) B, C and D
The (tens place digit, a) cannot be zero, but the (ones place digit, b) can be zero.   A is possible   B is NOT possible   C is NOT possible   D is NOT possible   Answer: B, C and D
<result>E</result>
If ab represents a positive two-digit number, where a and b are one-digit integers, which of the following CANNOT be true?