The LCM is: 40. To find the Least Common Multiple (LCM) of any two numbers:
The common factors (2 x 2) are bolded, so this is multiplied by the other non-common factors: (2 x 2) x 2 x 5 = 40.
40
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The LCM is: 280
Since 20 is a multiple of 4, it is automatically the LCM.
The LCM is: 180
The LCM is: 120
Oh, dude, the least common multiple (LCM) of 8, 16, and 20 is 80. It's like the number that these three numbers can all divide into without leaving a remainder. So, if you ever need to find a number that these three can all agree on, it's 80. Cool, right?