Question

find the lcm of 8,12,20,30,80 by division method

Answer 1

Answer:

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Answer 2

Concept:

Least Common Multiple is the smallest numbers among a group of numbers that is multiple of a given number. The number multiplied will always be a whole number.

Given:

The series $8,12,20,30,80$

Find:

The $L.C.M$ of the numbers by divison method.

Solution:

According to the problem,

The divison method is,

$2|8,12,20,30,80$

$2|4,6,10,15,40$

$2|2,3,5,15,20$

$2|1,3,5,15,10$

$3|1,3,5,15,5$

$5|1,1,5,5,5$

$|1,1,1,1,1$

The smallest number is $2*2*2*2*3*5=240$

Hence, the $L.CM$ is $240$.