Positive integer x has y factors; 3x has 3 factors; Which of the following values can y take?
I. 1
II. 2
III. 3 Choose the most appropriate option
A) I or II  B) I only is true  C) II only is true  D) II or III  E) I or III
Squares have odd number of factors.The square which is a multiple of 3 is 9.   3 has factors 1,3 .   Therefore 2 factors   Answer II only is true
<result>C</result>
Positive integer x has y factors; 3x has 3 factors; Which of the following values can y take?
I. 1
II. 2
III. 3