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25 Jun 2017, 19:21
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Difficulty:
55%
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Question Stats:
62% (01:45) correct
38%
(02:27)
wrong
based on 21
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Three boys and three girls are to be seated around a table in a circle. Among boys, X does not want any girl neighbor and among girls Y does not want any boy neighbor. How many such arrangements are possible?
A) 6
B) 4
C) 8
D) 2
E) 9
A) 6
B) 4
C) 8
D) 2
E) 9
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25 Jun 2017, 20:08
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theperfectgentleman
Three boys and three girls are to be seated around a table in a circle. Among boys, X does not want any girl neighbor and among girls Y does not want any boy neighbor. How many such arrangements are possible?
A) 6
B) 4
C) 8
D) 2
E) 9
A) 6
B) 4
C) 8
D) 2
E) 9
Hi..
This basically means all three boys have to be together with X in center and three girls together with Y in center.
X and Y have there seats fixed. The remaining boys can be seated in 2! Ways and similarly girls in 2! Ways..
Total 2*2=4
B
26 Jun 2017, 02:12
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Hi why it can not be 8 as the we can divide 6 seats in 2 different ways.
please explain fault in my reasoning?
please explain fault in my reasoning?
