1.

LCM of the 660,420 and240 only these three are their in the LCM proper method we have to do

Answer»

LCM =18480

Step-by-step EXPLANATION:

First divide the NUMBERS by 2 ,4 TIMES

then divide it by 3

then by 5

then by 7

then by 11

and multiply

2×2×2×2×3×5×7×11

=18480



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