If a and b are different positive integers and a + b = a(a + b), then which of the following must be true?
I. a = 1
II. a = 0
III. b < a
Answers:
A) I only B) II only C) III only D) I and II E) I and III
a has to equal a squared, and that only works if a is 1. There are no positive integers less than 1, so I and III are correct.   I onlynswer : I only
<result>A</result>
If a and b are different positive integers and a + b = a(a + b), then which of the following must be true?
I. a = 1
II. a = 0
III. b < a