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 Post subject: city of london 2010 help pleasePosted: Thu Jan 05, 2012 12:10 pm

Joined: Tue Jan 03, 2012 11:23 am
Posts: 1
Does anyone know the answers to question 30

A number of children are standing in a circle. They are evenly spaced and the 7th child is opposite the 18th child. How many children are there?

Question 36

Perimeter of a shape - can't draw it on here but i anyone has the paper, I think there needs to be more info for the question to be answered

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 Post subject: Re: city of london 2010 help pleasePosted: Thu Jan 05, 2012 4:03 pm

Joined: Thu Jan 03, 2008 8:26 am
Posts: 1322
Location: Watford, Herts
dp1 wrote:
Does anyone know the answers to question 30

A number of children are standing in a circle. They are evenly spaced and the 7th child is opposite the 18th child. How many children are there?

As is often the case, the forum search facility leads to the answer:
viewtopic.php?f=2&t=18348&p=219119&hilit=7th+child+opposite+18th

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 Post subject: Re: city of london 2010 help pleasePosted: Fri Jan 06, 2012 7:24 pm

Joined: Thu Nov 10, 2011 12:05 pm
Posts: 63
dp1 wrote:
Does anyone know the answers to question 30

A number of children are standing in a circle. They are evenly spaced and the 7th child is opposite the 18th child. How many children are there?

Question 36

Perimeter of a shape - can't draw it on here but i anyone has the paper, I think there needs to be more info for the question to be answered

Q36: ignoring the 7th and the 18th child, there are 10 children located in positions 8 th to 17th inclusive and the same number for the other half of the circle. So in total there must be 22 (10 +10+2 now includes the 7th and 18th child) in the circle.

On the move at the moment and font have the 2010 paper with me so can't help with q36 , sorry!

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 Post subject: Re: city of london 2010 help pleasePosted: Sat Jan 07, 2012 7:35 am

Joined: Thu Nov 10, 2011 12:05 pm
Posts: 63
Q36 perimeter of the shape: the answer is 48 cm but difficult to explain without labelling the diagram.

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