LCM of 60 & 72
once again take the prime decomposition of the two numbers:
60=(2^2)x3x5
72=(2^3)(3^2)
now the prime decomposition of the LCM of the two must contain only
sufficient prime factors so that it contains the decomposition of the
two numbers so:
LCM(60, 72)=(2^3)x(3^2)x5=360
RonL