Question

find the L.C.M of 20 25 and 30

Answer 1

Dear student,

Least common multiple is the smallest positive number that is a multiple of all the numbers.

$$\begin{gathered} Multiplesof20=20,40,60,80,........,300 \\ Multiplesof25=25,50,75,100,.......,300 \\ Multiplesof30=30,60,90,120,.......,300 \end{gathered}$$

300 is the first common value we get.

Hence, LCM of 20, 25 and 30 is 300.

Regards