What is the least common multiple of 12,15,18,27 Pick
A) 640
B) 540
C) 691
D) 385
E) 789
factors of 12 =2*2*3   factors of 27= 3*3*3   factors of 15 =3*5   factors of 18 =2*3*3   thus the l.c.m is   2*3*2*3**1*5*3= 
<gadget id="calculator">  2*3*2*3**1*5*3</gadget>
<output>540</output>
540   the answer is 540
<result>B</result>
What is the least common multiple of 12,15,18,27