Eight persons numbered 1, 2, 3, ...., 8 to be seated round a circular table at random. The probability that the person numbered 1 sits between 2 and 3 is

12 persons are seated around a round table. What is the probability that two particular persons sit together?

There are 10 persons who are to seated around a circular table . Find the probability that two particular will always sit together .

Fifteen person, among whom are A and B , sit down at random at a round table, the probability that there are exactly are 4 persons between A and B is

10 persons sit around a circular table with 10 numbered chairs.The probability that the two particular persons A andB are always together is

There are n+ 3(n > 1) seats numbered 1, 2, 3, , n + 3. There are also n+ 3 persons who are holding tickets numbered 1, 2, 3, . . . , n + 3. They take seats at random. Find the probability that exactly three persons take seats having the same numbers as that in their tickets.

Fifteen persons, among whom are A and B, sit down at random on a round table. The probability that there are 4 persons between A and B, is

Fifteen persons,among whom are A and B, sit down at random on a round table.The probability that there are 4 persons between A and B, is

Twenty persons among whom A and B, sit at random around a round table,then the probability that there are any 6 persons between A and B is