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 Post subject: Demon Type K question
PostPosted: Sun Feb 27, 2011 10:38 pm 
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Joined: Sat Feb 25, 2006 1:21 am
Posts: 2125
I'm the first to admit that maths isn't my strong point, but...either there's a mistake in this question or I'm losing it!

(6 [12] 18) (7 [19] 12)

(8 [___] 12)

The answer is supposed to be 10. Which you would get by adding the numbers together and dividing by 2 - this works for the first pair. But it doesn't work for the second pair! :?

Any ideas welcome!

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PostPosted: Sun Feb 27, 2011 11:14 pm 
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Joined: Sat Feb 13, 2010 11:02 pm
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Hi,

I asked this question a few months ago.

viewtopic.php?f=3&t=16177

I thought I was going potty and missing something obvious - but it was nice to know that it wasn't only me.


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PostPosted: Sun Feb 27, 2011 11:17 pm 
Maybe it's one of those typo ones we come across now and then


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PostPosted: Sun Feb 27, 2011 11:50 pm 
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Joined: Sat Feb 25, 2006 1:21 am
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Thanks for replies and for the link - nice to have confirmation that I have a few marbles left!

If you change the number(s) in the second set so that they add up to 38 (e.g. 7 and 31) then the sum works.

This is the second mistake we've spotted in one day - earlier we found an error in a Type N from the same source!

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