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Find the smallest number that is exactly divisible by 18 , 25 and 40
Given: The numbers 18,25 and 40
To find: The smallest number that is exactly divisible by the numbers
Solution:
Find the LCM
2|18,25,40
2|9.25.20
2|9,25.10
3|9,25,5
3|3,25,5
5|1,25,5
5|1,5,1
|
Therefore LCM(18,25,40 )= 2$\times$2$\times$2$\times$2$\times$3$\times$3$\times$5$\times$5
=1800
Therefore 1800 is the smallest number which is divided by 18,25 and 40
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