mathsaeyway

9000 has unit place is 0 so it can be devided by 5 and 10. so let say first two numbers can be 5 and 10. now to find third number;let say x; now product of three number is 9000; so 5*10*x=9000; so 50x=9000;simplify: x=9000/50=180;3 numbers can be :5,10,18...