Question

Smallest 4 digit number which is divisible by 6,8,12,and 20

Answer 1

As we know that smallest 4 digit number is 1000.

Now,

We have to find LCM of 6, 8, 12 and 20

6:-2×3

8:-2×2×2

12:-2×2×3

20:-2×2×5

LCM:- 120

Now,

smallest number :- 1000

dividing 1000 by 120

120) 1000 ( 8
960
-____
40


The number:- 1000+(120-40)
:-1000+80
:-1080

The required number is 1080


@Altaf