Question

find the LCM of 112 , 168 and 420 by using prime factorisation method​

Answer 1

Answer:

2(112,168,420)

2(56,84,210)

2(28,42,105)

3(14,21,105)

7(14,7,35)

(2,1,5)

2*2*2*3*7*2*1*5=1680