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PostPosted: Thu Oct 13, 2011 11:06 pm 
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Joined: Mon Jul 04, 2011 6:07 pm
Posts: 70
Hi,

I hope this question has not already been asked, if it has then could someone please direct me to the post as I cannot find it. :)

We got stuck on the following question:

3 [5] 16
4 [10] 28
5 [?] 10

The answer is 0 but I don't understand why?

Thank you. :)


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PostPosted: Thu Oct 13, 2011 11:09 pm 
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Joined: Thu Oct 02, 2008 9:09 pm
Posts: 69
Location: Gloucestershire
This is my take on it:
3 [5] 16: 16/2= 8, 8-3=5

4 [10] 28: 28/2=14, 14-4=10

5 [?] 10: 10/2=5, 5-5=0

Hope this helps


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PostPosted: Fri Oct 14, 2011 10:47 am 
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Joined: Wed May 18, 2011 10:56 am
Posts: 215
Hi,
the above looks like the correct technique, but i would of added the 1st and middle numbers and x2 =3rd no. If you see the pattern in the 1st 2 then the third one should follow suit. Normally i think it is preferred to work with the outside no.s.


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PostPosted: Fri Oct 14, 2011 10:59 am 
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Joined: Tue May 10, 2011 1:12 pm
Posts: 117
Thanks colourful-rainbow for posting this question.
I was going to post the same one too....
Just did the paper yesterday. DD got 88%. She was very upset.

Thanks red for giving the answer.


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PostPosted: Fri Oct 14, 2011 5:38 pm 
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Joined: Mon Jul 04, 2011 6:07 pm
Posts: 70
Red wrote:
This is my take on it:
3 [5] 16: 16/2= 8, 8-3=5

4 [10] 28: 28/2=14, 14-4=10

5 [?] 10: 10/2=5, 5-5=0

Hope this helps


hasmum wrote:
Hi,
the above looks like the correct technique, but i would of added the 1st and middle numbers and x2 =3rd no. If you see the pattern in the 1st 2 then the third one should follow suit. Normally i think it is preferred to work with the outside no.s.


Thank you, they both work. :)

ReplayMum wrote:
Thanks colourful-rainbow for posting this question.
I was going to post the same one too....
Just did the paper yesterday. DD got 88%. She was very upset.

Thanks red for giving the answer.


I think it was a difficult paper compared to pack 1, but once you go over the questions and the techniques you could use for each one they should be fine. :)


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PostPosted: Mon Oct 24, 2011 9:50 am 
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Joined: Thu Oct 06, 2011 9:09 am
Posts: 2
Hi I think

3+5 = 8x2 = 16
4+10 =14x2= 28
5+0= 5x2 = 10

MA


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PostPosted: Mon Nov 14, 2011 10:36 pm 
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Joined: Mon Oct 31, 2011 3:26 pm
Posts: 12
Did anyone notice

3x2=6 (in 16)
4x2=8 (in 28)
5x0=0 (in 10)


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