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A football team has 99 players. Each player has a uniform nu

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A football team has 99 players. Each player has a uniform nu  [#permalink]

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New post Updated on: 09 Feb 2013, 02:01
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A
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E

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Question Stats:

76% (00:39) correct 24% (01:37) wrong based on 71 sessions

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A football team has 99 players. Each player has a uniform number from 1 to 99 and no two players share the same number. When football practice ends, all the players run off the field one-by-one in a completely random manner. What is the probability that the first four players off the field will leave in order of increasing uniform numbers (e.g., #2, then #6, then #67, then #72,etc) ?

(A) 1/64
(B) 1/48
(C) 1/36
(D) 1/24
(E) 1/16

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Originally posted by Rock750 on 08 Feb 2013, 20:12.
Last edited by Bunuel on 09 Feb 2013, 02:01, edited 1 time in total.
Edited the question and added the OA.
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Re: A football team has 99 players. Each player has a uniform nu  [#permalink]

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New post 08 Feb 2013, 22:00
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No. of ways in which 4 people can leave the field i.e. No. of ways of arranging 4 people = 4! = 24

Out of these 24 ways, there is only one way in which they are in ascending order.

So, probability = \(\frac{1}{24}\)

Answer is D.
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Re: A football team has 99 players. Each player has a uniform nu  [#permalink]

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New post 09 Feb 2013, 02:05
Rock750 wrote:
A football team has 99 players. Each player has a uniform number from 1 to 99 and no two players share the same number. When football practice ends, all the players run off the field one-by-one in a completely random manner. What is the probability that the first four players off the field will leave in order of increasing uniform numbers (e.g., #2, then #6, then #67, then #72,etc) ?

(A) 1/64
(B) 1/48
(C) 1/36
(D) 1/24
(E) 1/16


Similar question to practice: devil-s-dozen-129312.html#p1063874

P.S. Always indicate OA!!! Rule #7 here: rules-for-posting-please-read-this-before-posting-133935.html
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Re: A football team has 99 players. Each player has a uniform nu  [#permalink]

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New post 30 Sep 2018, 06:45
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Re: A football team has 99 players. Each player has a uniform nu   [#permalink] 30 Sep 2018, 06:45
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