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Mathematical Puzzle

Postby Warsop Person » Fri Apr 23, 2010 4:43 pm

I was told today that some people on here like mathmatical problems, so here is a straight forward one for you....

When asked a question with a simple yes or no answer exactly 63.41463414 % replied yes.

What is the least number of people that could have been canvassed in order to result in this answer?
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Re: Mathematical Puzzle

Postby Tomas Drouty » Fri Apr 23, 2010 5:01 pm

Hmm tricky .. it's a recurring decimal.
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Re: Mathematical Puzzle

Postby Caz » Fri Apr 23, 2010 5:54 pm

:rofl: I didn't say "some" people. I said a particlular person! And I forgot to mention that he prefers them during school holidays when he has no marking to do! :lol:

Anyway, you've lost me already, so I'll leave you two to it! But I'll come back and look for the answer. :lol:
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Re: Mathematical Puzzle

Postby Warsop Person » Fri Apr 23, 2010 6:01 pm

Caz wrote::rofl: I didn't say "some" people. I said a particlular person! And I forgot to mention that he prefers them during school holidays when he has no marking to do! :lol:

Anyway, you've lost me already, so I'll leave you two to it! But I'll come back and look for the answer. :lol:


Thought you were a crack at them too!


Anyway, I thought it was straight forward, but then it is easy to say that when you know how to find the answer. :-?
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Re: Mathematical Puzzle

Postby Magic » Fri Apr 23, 2010 6:14 pm

Well...is it an exact figure or a rounded figure off a 10 digit calculator?
I'll PM you my answers...
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Re: Mathematical Puzzle

Postby Tomas Drouty » Fri Apr 23, 2010 6:15 pm

41 people were asked .. of which 26 said yes.

It can be solved by realising that the decimal is recurring ... and has 5 recurring digits.... 63414 ... recurring decimals can easily be turned into fractions by taking the recurring numbers as the numerator .. the denominator is simply the number of 9s equal to the number of recurring digits. .. in this case the fraction formed is 63414/99999 ... and as both numbers are divisible by 9 ... this cancels down to be 7046/11111 ... which also cancels down further to 26/41 .. meaning 26 out of 41 people in terms of the percentage.
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Re: Mathematical Puzzle

Postby Warsop Person » Fri Apr 23, 2010 8:22 pm

Well done, that is the correct answer. =D>
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Re: Mathematical Puzzle

Postby Warsop Person » Fri Apr 23, 2010 8:24 pm

When I have a little more time I will work some problems out and post them....
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Re: Mathematical Puzzle

Postby Caz » Fri Apr 23, 2010 10:28 pm

Warsop Person wrote:
Caz wrote::rofl: I didn't say "some" people. I said a particlular person! And I forgot to mention that he prefers them during school holidays when he has no marking to do! :lol:

Anyway, you've lost me already, so I'll leave you two to it! But I'll come back and look for the answer. :lol:


Thought you were a crack at them too!
quote] :shock: Yeah right! Maths is my worst subject, everyone on here knows that. :roll: It took me two attempts to get a grade C at GSCS!!! :oops:
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Re: Mathematical Puzzle

Postby m8tey » Sat Apr 24, 2010 12:28 am

I thought reversing into a drive was your worst subject Caz....... :lol:
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Re: Mathematical Puzzle

Postby Caz » Sat Apr 24, 2010 10:26 am

m8tey wrote:I thought reversing into a drive was your worst subject Caz....... :lol:
:oops: Yes but watching me trying to reverse into a driveway is more comical than watching me trying to work out a maths problem. :lol:

Anyway I knew the answer to this, I just thought I'd give TD a chance! :---)
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Re: Mathematical Puzzle

Postby Tomas Drouty » Thu Jun 23, 2011 8:50 pm

What is the calculation needed to work out the odds of winning the Euromillions jackpot?

I'll give you a clue:

xxxxxx
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Re: Mathematical Puzzle

Postby whitevanman » Fri Jul 15, 2011 10:26 pm

Not sure if i can get the symbols correct but it should be something like this:-

1x2x3x4x5............x ...... 1x2
50x49x48x47x46 ........... 11x10

When worked out it gives odds of just over 116 million to 1
When the lottery first started there was only 9 lucky stars, so the calculation would have included 9x8 instead of the 11x10, that gave the odds at that time as about 76 million to 1


Edit
ignore the dots, i've had to put them in to get the spacing right
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Re: Mathematical Puzzle

Postby Tomas Drouty » Sat Jul 16, 2011 7:38 am

Well done, that is correct!
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