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0 votes
4.6k views
in Mathematics by (71.5k points)

There are 50 persons among whom 2 are brothers. The number of ways they can be arranged in a circle, if there is exactly one person between the two brothers is

(A) 47! 

(B) 48! 

(C) 2.48! 

(D) 2.47! 

1 Answer

+1 vote
by (70.7k points)
selected by
 
Best answer

Correct option (C)

Explanation:

Taking two togther and one person together then total person 48 person.

Now arrange in circle in (48 – 1)! = 47! ways

But one person can be choose by 48 ways and two brother can be arranged in 2 ways. there for total ways = 2.48. 47! = 2. 48

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