# QA – Placement Quizzes | LCM | Question 5

Three numbers are in the ratio of 2 : 3 : 4 and their L.C.M. is 240. Their H.C.F. is:**(A)** 40**(B)** 20**(C)** 30**(D)** 10**Answer:** **(B)****Explanation:** Let the numbers be 2x, 3x and 4x

LCM = 12x

12x=240

⇒x=20

H.C.F of 40, 60 and 80=20

Quiz of this Question