In a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broken mirrors to unbroken mirrors? Options
A) 2 : 1	B) 3 : 1	C) 3 : 2	D) 7 : 5	E) None
Sol.   For dividing 12 into two whole numbers, the sum of the ratio terms must be a factor of 12. So, they cannot be in the ratio 3 : 2.   Answer 3 : 2
<result>C</result>
In a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broken mirrors to unbroken mirrors?