Math, asked by sgladstorm5328, 1 year ago

There are 20 persons sitting in a circle. In that there are 18 men and 2 sisters. How many arrangements are possible in which the two sisters are always separated by a man?
a. 18!x2

b. 17!
c. 17x2!

d. 12

Answers

Answered by sprao534

0

18 men can sit around a circle in 17!ways. Two sisters and one man in between can sit in 18*2 ways. Hence total number of arrangements =17!

(18*2)=18!*2

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