What is the least common multiple of 12, 18, and 24?  Pick one:
A) 72
B) 120
C) 240
D) 360
E) 720
Let us first write the numbers in the form of prime factors:   12 = 2^2 * 3^1   18 = 2^1 * 3^2   24 = 2 * 17^1   The LCM would be the largest powers of the prime numbers from all these three numbers.   Hence LCM = 72   Option 72
<result>A</result>
What is the least common multiple of 12, 18, and 24?