Three numbers are in the ratio 3:4:5 and their L.C.M. is 600. Their H.C.F is?	Choose the correct choice:
A) 10
B) 30
C) 40
D) 50
E) 60
Let the numbers be 3x,4x and 5x   their L.C.M. = 60x   60x =600   x = 10   The numbers are 3*10 , 4*10 , 5*10   Hence required H.C.F. = 10   10nswer is 10
<result>A</result>
Three numbers are in the ratio 3:4:5 and their L.C.M. is 600. Their H.C.F is?