Question 27

Find the LCM of 12, 16, 20 and 24.

Solution

Prime factorisation of 12, 16, 20 and 24.

12 = $$2^2\times\ 3$$

16 = $$2^4$$

20 = $$2^2\times\ 5$$

24 = $$2^3\times3$$

L.C.M = $$2^4\times\ 3\times\ 5=240$$.

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