It is: 3240
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Tough Question. The answer I got 380 but it is 360.
LCM = 90
The LCM is 10920.
Prime factorization of 90 = 2 x 3 x 3 x 5Prime factorization of 120 = 2 x 2 x 2 x 3 x 5HCF(90,120) = 2 x 3 x 5 = 30.LCM of two numbers a and b = Product of a and b/ HCF(a,b)LCM(90,120) = (90 x 120)/30 = 3 x 120 = 360.
The LCM is 405.