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PostPosted: Fri Aug 30, 2013 5:27 pm 
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Joined: Sun Jan 20, 2013 10:22 am
Posts: 73
There are 27 children in a club.
Which one of these statements cannot be
true?
A There are more boys than girls in the
club.
B There are more girls than boys in the
club.
C There are three more boys than girls in
the club.
D There are six more girls than boys in
the club.
E There are nine more boys than girls in
the club.

Answer D. How to find this one, is there any method can I follow. Thanks for your help.


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 Post subject: Re: Help please
PostPosted: Fri Aug 30, 2013 5:40 pm 
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Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11949
My hint is to look at pairs of integers that add to 27.


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 Post subject: Re: Help please
PostPosted: Fri Aug 30, 2013 6:35 pm 
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Joined: Sat Dec 03, 2011 3:14 pm
Posts: 625
D is correct as the difference between the 2 groups will always be an odd number.

A & B - there isn't enough information to say either is false. C & E both have a difference of odd number so either might be true.


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