If a, b, and c are consecutive odd positive integers and a<b<c, which of the following must be true?
I. at least one of the three numbers is prime
II. ab>c
III. a + b + c = 3b  Pick one: A) III only B) I and II only C) I and III only D) II and III only E) I, II, and III
The Case 91,93,95 where there are no prime nos. is tested here.   as their is only one prime number between 90 to 99 ie 97.   III onlynd hence option III only
<result>A</result>
If a, b, and c are consecutive odd positive integers and a<b<c, which of the following must be true?
I. at least one of the three numbers is prime
II. ab>c
III. a + b + c = 3b