Question

Find the smallest 6 digit number exactly divisible by 25, 5 and 36.

Answer 1

Hi,

Lets find the LCM of 25, 5 and 36

36 =(2*2)(3*3)(5*0)

25=(5*5)(2*0)(3*0)

5=(5*1)(2*0)(3*0)

The LCM must have all these factors

The LCM is= (2*2)(3*3)(5*5)

=900

So, the now we need the smallest six digit number which is divisible by 900

and the answer is 180000

I hope this helps you....