Question

find the greatest four digit number that is exactly divisible by 9 , 12 and 15​

Answer 1

Answer:

greatest four digit no is 9999

now lcm og 9,12,15 is 180

divide 9999/180 remainder you will get is 99

so subtract i.e.9999-99=9990 is the required number

Answer 2

Answer:

9720

Explanation

9*1080=9720

12*810=9720

15*648=9720