Question

find the greatest 4 digit number which is exactly divisible by 12,15,18,27

Answer 1

First take out the lcm then multiply and divide it by greatest four digit number then whatever will be the remainder subtract the remainder with greatest four digit no

Answer 2

the LCM of 12,15,18,27 is 540.The largest 4 digit number which is a multiple of 540 is 9720.
∴the greatest 4 digit number which is exactly divisible by 12,15,18,27 is 9720.