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#1 2015-06-02 09:01:37
Permutation And Combination:
Question:
In how many ways can 8 Indians and, 4 American and 4 Englishmen can be seated in a row so that all person of the same nationality sit together?
Option A):
4! 4!
Option B):
8! 4! 4!
Option C):
3! 4! 8! 4!
Option D):
3! 8!
Correct Answer is Option C):
3! 4! 8! 4!
Explanation:
Taking all person of same nationality as one person, then we will have only three people.
These three person can be arranged themselves in 3! Ways.
8 Indians can be arranged themselves in 8! Way.
4 American can be arranged themselves in 4! Ways.
4 Englishman can be arranged themselves in 4! Ways.
Hence, required number of ways = 3!*8!*4!*4! Ways.
You cannot discover the new oceans unless you have the courage to lose the sight of the shore.
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2015-06-02 09:01:37
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