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#28292 - Fri Jun 14 2002 05:41 AM The Sunday Times ... Brain Teaser XII
gtho4 Online   FT-blank
Administrator

Registered: Sun Dec 26 1999
Posts: 50415
Loc: Sydney oz downunder           
Overseas Mail
quote:
We were visiting the island of Kimbu and had come to the post-office to send some parcels to friends at home. The island's currency is the pim, and the postmaster told us that he had only stamps for five different face-values, as these had to be used up before the new issue of stamps was introduced.

These stamps were black, red, green, violet and yellow, in descending order of values, the black being the highest and the yellow the lowest.

One parcel required stamps to the value of 100 pims and we were handed 9 stamps, 5 black, one green and 3 violet. The other two parcels required 50 pims' worth each, and for these we were given two different sets of 9 stamps. One consisted of 1 black and 2 each of the other colours, and the other set contained 5 green and 1 each of the others.

What would have been the smallest number of stamps needed for a 50 pim parcel, and of which colours?


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#28293 - Fri Jun 14 2002 07:51 AM Re: The Sunday Times ... Brain Teaser XII
fringe Offline
Multiloquent

Registered: Wed May 29 2002
Posts: 2059
Loc: Malaga, Spain    
I can't make it any less than five - 2 black, 1 red, 1 green and 1 yellow ?
[Smile]

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#28294 - Fri Jun 14 2002 09:17 AM Re: The Sunday Times ... Brain Teaser XII
Laguz Offline
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Registered: Sat May 18 2002
Posts: 285
Loc: Lithuania
That's what I also get. 2 black (2*18), 1 red (9), 1 green (4) and 1 yellow (1).

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#28295 - Fri Jun 14 2002 08:41 PM The Sunday Times ... Brain Teaser XII
gtho4 Online   FT-blank
Administrator

Registered: Sun Dec 26 1999
Posts: 50415
Loc: Sydney oz downunder           
yep, both answers are spot on

[ testing colours ]

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