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 Post subject: Question query
PostPosted: Sun Sep 14, 2008 3:38 pm 
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Joined: Sat Jan 12, 2008 12:03 pm
Posts: 42
(21 (30) 1)
(20 (11) 10)
(16 ( _ ) 2)

Answer 17

How?


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 Post subject: Re: Question query
PostPosted: Sun Sep 14, 2008 3:53 pm 
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Joined: Fri Nov 17, 2006 8:54 pm
Posts: 1770
Location: caversham
njg wrote:
(21 (30) 1)
(20 (11) 10)
(16 ( _ ) 2)

Answer 17

How?


21/1 + 9 = 30
20/10 + 9 = 11

so? 16/2 + 9 = 17


but it took us a few minutes...



steve


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 Post subject:
PostPosted: Mon Sep 15, 2008 2:11 pm 
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Joined: Sat Jan 12, 2008 12:03 pm
Posts: 42
Thanks - annoyingly obvious now!


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