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 Post subject: Probability question
PostPosted: Mon Nov 24, 2014 1:50 pm 
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Joined: Wed Nov 28, 2012 5:39 pm
Posts: 8
Help Please!

We say that there is an even chance of getting head when a coin is thrown. Which one of the following statements is definitely true?

A There is an even chance that England will win the next football World Cup.
B There is an even chance that I get one head and one tail when I toss a coin twice.
C There is a greater than even chance that I get a 5 when I roll a single dice.
D There is a less than even chance of picking a blue ball from a bag containing 3 blue and 2 red balls
E There is an less than even chance that a baby will be born somewhere in the world in the next minute.

Thanks Guys.


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 Post subject: Re: Maths Questions
PostPosted: Mon Nov 24, 2014 2:00 pm 
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Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11940
A: incorrect, winning and losing are not equally likely
B: equally likely outcomes when spinning two coins are HH, HT, TH, TT - so even chance of one head and one tail
C: all outcomes on an unbiased die are equal so this is incorrect
D: 5 bals so prob of blue is 3/5 so the statement is incorrect
E: it is certain than a baby will be born somewhere in the next minuts so statement incorrect.

Seems a weird question; where is it from?


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 Post subject: Re: Maths Questions
PostPosted: Mon Nov 24, 2014 2:09 pm 
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Joined: Wed Nov 28, 2012 5:39 pm
Posts: 8
Its from the Haberdashers' Aske's Boy's School Elstree 2013 paper


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