How to LCM in in maths
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One way to find the least common multiple of two numbers is to first list the prime factors of each number. Then multiply each factor the greatest number of times it occurs in either number. If the same factor occurs more than once in both numbers, you multiply the factor the greatest number of times it occurs.
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eg. find the LCM of 2,5,10
LCM basically means - lowest common factor
multiples of 2:
2,4 ,6,8,10,12,14 ...
multiples of 5:
5,10,15,20,25,30,35 ...
multiples of 10:
10,20,30,40,50,60,70 ...
Now observe the common no. that is the smallest amongst all.
We find that 10 is the smallest no.
Therefore, 10 is the LCM of 2,5,10
Hope it helps you
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