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# A circular dart board of radius 5cm is hung on a wall. Pete

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Senior Manager
Joined: 30 Aug 2003
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A circular dart board of radius 5cm is hung on a wall. Pete [#permalink]

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13 Mar 2004, 16:31
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A circular dart board of radius 5cm is hung on a wall. Pete thros a dart from a distance of 10m and the dart hits the board. What is the probability that the dart hit the board within 1cm from the centre?
(10cm = 1 decimetres, 10 decimetres = 1m)

1/5
1/25
1/2^5

Cannot be determined
_________________

Pls include reasoning along with all answer posts.
****GMAT Loco****
Este examen me conduce jodiendo loco

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Intern
Joined: 09 Mar 2004
Posts: 21

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Location: USA

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13 Mar 2004, 23:20
The total area of the dart board is 25*Pi.
Area of the dart board with radius 1cm is Pi.
Now the probability that the dart hit the board within 1cm from the centre will be Pi/ 25Pi.

Twinkle.

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Director
Joined: 03 Jul 2003
Posts: 651

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17 Mar 2004, 05:54
A professional can hit the bulls eye all the time, whereas a novice through
results in random hit. We don't know wheather Pete is a professional or novice?

Thus, we can't determine the probability of the event!

Kudos [?]: 104 [0], given: 0

17 Mar 2004, 05:54
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