Question

Find the greatest number of four digits which is exactly divisible by 15, 24 and 36

Answer 1

15=3*5

24=2*2*2*3

36=2*2*3*3

L.C.M. = (2*2*2*3*3*5)

          = 360

Greatest four digits number = 9999

(9999/360)

= 27.78

So, the number is =(360*27)

                              = 9720

(Ans): 9720.