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 Post subject: Number patternPosted: Sat Feb 13, 2010 10:58 am

Joined: Sat Jun 21, 2008 11:56 am
Posts: 22
Hi

Need your help to work this out.

The numbers in these groups follows a rule.

(4, 1, 3) (7, 6, 3) (9, 9, ?)

Which answer number replaces the question mark?

(a) 4
(b) 6
(c) 7
(d) 8

Rds

Uma

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 Post subject: Posted: Sat Feb 13, 2010 12:40 pm

Joined: Tue Oct 27, 2009 8:19 pm
Posts: 6257
DS1 gone for a run but I'll set him onto it when he gets back (he's just done the 11+ for goodness sake) and I can't even see a pattern!!!!!

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 Post subject: Posted: Sat Feb 13, 2010 1:22 pm

Joined: Mon Apr 06, 2009 7:31 pm
Posts: 445
Location: East Lancs
I asked my OH (he's a mathematician who does this kind of thing for fun )
He says the answer is (b)6

(4+1+3) = 8
(7+6+3) = 16
so for the pattern to continue..
(9+9+x) = 24
x=6

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 Post subject: thanksPosted: Sun Feb 14, 2010 6:38 am

Joined: Sat Jun 21, 2008 11:56 am
Posts: 22

looks too easy now

Uma

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 Post subject: Posted: Sun Feb 14, 2010 2:17 pm

Joined: Tue Oct 27, 2009 8:19 pm
Posts: 6257
DS1 would concur!! His mother could only just see it when it was explained to her! He got it in about 20 seconds!!!! Ho hum - when the child overtakes the parent!!!!

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Knowledge is knowing that a tomato is a fruit, wisdom is not putting it in a fruit salad !

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