Question

if a=2mx3^2x5,b=2^12x3^3x5^2,c=2^3x5^7 and LCM(a, b, c) =2^18x3^3x5^7, value of m is​

Answer 1

Answer:

Find the least common multiple of 7.2, 1.08 and 21

Multiply all by 100 first.

720 = 6, 6, 5, 4

108 = 6, 6, 3

21 = 3 x 7................should this be mult by 100 ??

2100 = 6 x 7 x 5 x 2 x 5

LCM x 100 = 6 x 6 x 5 x 4 x 3 x 7 x 2 x 5 = 151200

Then real LCM = 1512

which is twice I got in an earlier post....so not least C M ...???