请教一道数学prep

maydaythekid

In the fraction X/Y, where X and Y are positive intergers, what is the value of Y?

(1) The least common denominator of X/Y and 1/3 is 6

(2) x=1

The answer is E

请问这道题里的least common denominator 是什么意思？解题思路是什么？谢谢

gmatplayers

比如1/2与1/3的最小公分母是6，1/6与1/3的最小公分母也是6。所以答案是E.