Solution:
Write down the multiples for each. The Least Common Multiple is the least number which occurs in all of the list of multiples
Multiples of 2
2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34
Multiples of 3
3,6,9,12,15,18,21,24,27,30,33,36
Multiples of 5
5,10,15,20,25,30,35,40
The least number which appeared in all 3 multiples is 30, hence the L.C.M for 2,3 and 5 is 30
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