Rules
Terms of Use

Topic Options
#22128 - Sat Jan 27 2001 06:52 AM Brain Teaser
dumpling Offline
Enthusiast

Registered: Thu Jan 04 2001
Posts: 345
Loc: Shropshire, UK
There is a nine digit number in which each of the digits from 1 to 9 appears once. The whole number is divisible by 9. If you remove the rightmost number, the remaining 8 digit number is divisible by 8. Remove the rightmost number, and the remaining 7 digit number is divisible by 7.This pattern continues down to a single digit. What is the number?

Top
#22129 - Sat Jan 27 2001 08:00 AM Re: Brain Teaser
gtho4 Offline
Administrator

Registered: Sun Dec 26 1999
Posts: 54484
Loc: Sydney
oz downunder
5th digit must be 5 and presumed last digit had to be 9, trial and error
381654729

Top
#22130 - Sat Jan 27 2001 08:24 AM Re: Brain Teaser
dumpling Offline
Enthusiast

Registered: Thu Jan 04 2001
Posts: 345
Loc: Shropshire, UK
Hi Gtho4


you're absolutely right....I'll have to make it harder next time

Dumpling

[This message has been edited by dumpling (edited 01-27-2001).]


Top

Moderator:  ozzz2002