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 Post subject: nfer paper c q44
PostPosted: Tue Aug 25, 2009 12:00 pm 
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Location: Bexley
Just going through some of the questions my dd got wrong on this practise paper.

With q 44 she keeps getting AB as her answer and it's not on the multi choice answer sheet, WX is given as the answer.

I have checked it and I agree with my dd.

Can anyone exlain the answer?

Thanks.


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 Post subject:
PostPosted: Tue Aug 25, 2009 1:10 pm 
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Dear Tracy

Can you write out the question?

I think you will find its a form of mirror code.

Patricia


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 Post subject:
PostPosted: Tue Aug 25, 2009 1:39 pm 
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Thanks Patricia,

It says:

AB is to YZ
as CD is to ?


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 Post subject:
PostPosted: Tue Aug 25, 2009 2:00 pm 
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Dear Tracy

AB is to YZ
as CD is to


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Ist Method


A to Y = - 2

C – 2 = A

B to Z = - 2

D – 2 = B

Answer AB

If the answer is not on the answer sheet, child must look for another rule.

2nd Method

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

AB is to YZ
as CD is to

Mirror of A is Z,

Z to Y = - 1

Mirror of C = X , X – 1 = W

Mirror of B is Y

Y to Z = + 1

Mirror of D = W, W + 1 = X

Answer = WX

This question should never be used in standard format.

Patricia


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 Post subject:
PostPosted: Tue Aug 25, 2009 2:09 pm 
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Thanks for the explanation, I would never have got that!


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 Post subject:
PostPosted: Tue Aug 25, 2009 2:15 pm 
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Another way to look at it..

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

AB is to YZ
as CD is to

Flip AB over to the end of the alphabet and get YZ

Flip over CD and get WX

Patricia


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 Post subject:
PostPosted: Tue Aug 25, 2009 2:20 pm 
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Thanks, I'll try to explain to dd when she comes in from playing, she was only 10 last week!


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 Post subject:
PostPosted: Tue Aug 25, 2009 6:38 pm 
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This is a unusual one, but very visual and doesn't take any working out in the normal sense.

If you ring AB and the YZ, then CD, then most children will see which next pair to ring - it just rquies a slightly different 'take' on the question.


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 Post subject:
PostPosted: Wed Aug 26, 2009 3:46 pm 
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I came across a very difficult one. My son worked it out the straight way, (choosing to make it OB, I think, from memory) went confidently to the answer sheet ... not there as an option.

Puzzled we went through the answers and found it was one which we could only work out by "seeing" it.

The question was XJ is to QC as VH is to ...
SE

when you "see" it you have the pencil looking from X to Q and from C to J making sort of little swags, and then H and E made a mini swag within the C to J, and the S to V another within Q to X. Hope you understand my description of it.

I am hoping that this sort is HIGHLY unlikely to come up in a VR based test???


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 Post subject:
PostPosted: Wed Aug 26, 2009 5:58 pm 
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We have just gone through this together 'ringing' the pairs as suggested.
Now it looks SO obvious.
Thanks for all your help everyone.


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