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In the below 10*10 matrix, what is the probability of selecting

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Joined: 21 Aug 2016
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Kudos [?]: 22 [1], given: 136

Location: India
GPA: 3.9
WE: Information Technology (Computer Software)
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In the below 10*10 matrix, what is the probability of selecting [#permalink]

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New post 25 Nov 2017, 01:32
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In the below 10*10 matrix, what is the probability of selecting a star from odd row and odd column, given that a star is already selected?

* 0 0 0 0 0 0 0 0 0
* * 0 0 0 0 0 0 0 0
* * * 0 0 0 0 0 0 0
* * * * 0 0 0 0 0 0
* * * * * 0 0 0 0 0
* * * * * * 0 0 0 0
* * * * * * * 0 0 0
* * * * * * * * 0 0
* * * * * * * * * 0
* * * * * * * * * *

1) 21/100
2)21/55
3) 84/121
4) 55/100
5) None of these

Please provide the explanation as well.
[Reveal] Spoiler: OA

Kudos [?]: 22 [1], given: 136

Senior Manager
Senior Manager
avatar
G
Joined: 21 Aug 2016
Posts: 299

Kudos [?]: 22 [0], given: 136

Location: India
GPA: 3.9
WE: Information Technology (Computer Software)
GMAT ToolKit User Reviews Badge
Re: In the below 10*10 matrix, what is the probability of selecting [#permalink]

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New post 25 Nov 2017, 01:35
VeritasPrepKarishma

Please help with the above question. Thanks.

Kudos [?]: 22 [0], given: 136

Re: In the below 10*10 matrix, what is the probability of selecting   [#permalink] 25 Nov 2017, 01:35
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In the below 10*10 matrix, what is the probability of selecting

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