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gud prob ques..

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by vivek.kapoor83 » Mon Jan 05, 2009 1:55 am
A dart is thrown at a dart board whose dimensions are 5m*5m . If the probabilty of missin the dart board is 0.25, find the probabilty of hitting the board at a point that is at a max distance of 2m from the centre of the board.
OA [spoiler](3pi)/25[/spoiler][/spoiler]
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Re: gud prob ques..

by logitech » Mon Jan 05, 2009 2:23 am
Probability = ( Circle Area / Square Area ) x ( 1 - 0.25 )

= ( 4pi / 25 ) ( 3/4 )

= 3pi/25
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by vivek.kapoor83 » Mon Jan 05, 2009 2:28 am
Logitech,
Salute u !!!! u killed the beast in 5 sec. GMAT should do something for u..otherwise u ll destroy them by making a mockery of exam. U hv to get 1000 out of 800. 800/800 is nothing for u..... :P
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by DanaJ » Mon Jan 05, 2009 4:01 am
Area of the square...........(1-0,25) = 0,75
Area of circle...................x

x = Area of circle * 0,75 / Area of square = 0,12Pi
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