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Jack Danison, his wife and his two kids went to a theatre to watch a

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Jack Danison, his wife and his two kids went to a theatre to watch a [#permalink]

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New post Updated on: 09 Apr 2018, 01:20
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Difficulty:

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Question Stats:

54% (00:24) correct 46% (00:25) wrong based on 24 sessions

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Jack Danison, his wife and his two kids went to a theatre to watch a movie. In how many ways can they sit in a row such that the two kids have to be together always?

a. 3
b. 6
c. 9
d. 12
e. 18


source: time4education
[Reveal] Spoiler: OA

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Originally posted by Nixondutta on 08 Apr 2018, 23:51.
Last edited by Bunuel on 09 Apr 2018, 01:20, edited 1 time in total.
Edited the question.
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Re: Jack Danison, his wife and his two kids went to a theatre to watch a [#permalink]

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New post 09 Apr 2018, 00:08
Nixondutta wrote:
Jack Danison, his wife and his two kids went to a theatre to watch a movie. In how many ways can they sit in a row such that the two kids have to be together always?
source: time4education


a.3
b.6
c.9
d.12
e.18


Let the 2 kids be one entity then

they can sit in 3! ways

the 2 kids can be arranged in 2! ways.

Total ways=3!*2!=12

D
Re: Jack Danison, his wife and his two kids went to a theatre to watch a   [#permalink] 09 Apr 2018, 00:08
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Jack Danison, his wife and his two kids went to a theatre to watch a

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