If I got I right, 70 would be such a number.
(I hope this is no spoiler)

divisors = [1, 2, 5, 7, 10, 14, 35]
sum = 74 

no combination of the divisors adds up to 70

cheers

Simon

> -----Original Message-----
> From: JB Eriksson [mailto:mrkode / gmail.com] 
> Sent: Friday, December 02, 2005 3:48 PM
> To: ruby-talk ML
> Subject: Re: [QUIZ] Weird Numbers (#57)
> 
> please give an example of such a number. english is my second 
> language, and
> english math speak is more like my sixth language or so (below
> german,swedish techspeak and english techspeak).
> 
> On 12/2/05, Ruby Quiz <james / grayproductions.net> wrote:
> >
> > The three rules of Ruby Quiz:
> >
> > 1.  Please do not post any solutions or spoiler discussion 
> for this quiz
> > until
> > 48 hours have passed from the time on this message.
> >
> > 2.  Support Ruby Quiz by submitting ideas as often as you can:
> >
> > http://www.rubyquiz.com/
> >
> > 3.  Enjoy!
> >
> >
> > 
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> -=-=-=-=-=-=-=-=-=
> >
> > by Martin DeMello
> >
> > A weird number is defined as a number, n, such that the sum 
> of all its
> > divisors
> > (excluding n itself) is greater than n, but no subset of 
> its divisors sums
> > up to
> > exactly n.
> >
> > Write a program to find all the weird numbers less than a 
> given input.
> >
> >
>