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PostPosted: Thu Oct 07, 2010 8:24 pm 
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Posts: 126
I am stuck on this sequence any help appreciated.

1 2 3 4 9 12 ( )

By the way the answer given is 36.



stressedparent


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PostPosted: Thu Oct 07, 2010 9:34 pm 
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Longer sequence of numbers - therefore look at every other one to find the pattern - in this case :

1x3 = 3
3x3 = 9
3x9 = 36

I think??!!


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PostPosted: Thu Oct 07, 2010 9:43 pm 
3x9 is 27


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PostPosted: Thu Oct 07, 2010 9:45 pm 
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I dont understand it. My only thought is that 1 2 3 4 9 12 are all factors of 36

but next in the sequence would be 18! Oh and 6 is missing! so I guess not.


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PostPosted: Thu Oct 07, 2010 9:58 pm 
maybe there is a type in the question paper


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PostPosted: Thu Oct 07, 2010 11:10 pm 
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stressedparent wrote:
I am stuck on this sequence any help appreciated.

1 2 3 4 9 12 ( )

By the way the answer given is 36.



stressedparent


mmmm ... good one! agree it might be a typo,

3*4=12 + 4*9=36 - so maybe something along that line
or: the cubes are there: 1,4,9,...,36 missing out 25......

mind addled - colleagues watching "matrix revolutions"... ugh!


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PostPosted: Fri Oct 08, 2010 8:57 am 
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Location: East Kent
been looking at this one for ages, still stumped


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PostPosted: Fri Oct 08, 2010 9:06 am 
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Me too....it has to be 27, surely ? :roll:


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PostPosted: Fri Oct 08, 2010 9:34 am 
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Joined: Wed Jul 07, 2010 11:04 am
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I haven't been able to get this one either :( So glad I'm not the only one :D Hopefully someone can put us all straight later on :wink:

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PostPosted: Fri Oct 08, 2010 10:47 am 
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Thanks for all of you for trying ,I will have to accept it must be an error.

stressedparent

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