Six persons A, B, C, D, E and Fare to be seated at a circular table. Then the number of ways can this be done if A must always has either B or Con his right and B must always has either C or D in his right is

Six persons A, B, C, D, E and F are to be seated at a circular table. In how many ways can this be done, if A must always have either B or C on his right and B must always have either C or D on his right?

Six persons A, B, C, D, E and F are to be seated at a circular table . The number of ways this can be done if A must have either B or C on his right and B must have either C or D on his right is

Six persons A, B, C, D, E, F, are to be seated at a circular table. In how many ways antis be one if A should have either B or C on his right and B must always have either C or D on his right.

Six persons A, B, C, D, E, F, are to be seated at a circular table. In how many ways antis be one if A should have either B or C on his right and B must always have either C or D on his right.

Six persons A,B,C,D,E,F, are to be seated at a circular table.In how many ways antis be one if A should have either B or C on his right and B must always have either C or D on his right.

Six persons A, B, C, D, E, F, are to be seated at a circular table. In how many ways antis be one if A should have either B or C on his and B must always have either C or D on his right.

Four persons A, B, C and D are to the seated at a circular table. In how many ways can they be seated ?

Four persons A, B, C and D are to be seated at a circular table. In how many ways can they be seated ?

six persons A, B, C, D, E and F are to be seated at a circular table facing towards the centre. Then the number of ways that can be done if A must have either E or F on his immediate right and E must have either F or D on his immediate right, is

Eight persons A, B, C, D, E, F, G and H are seated around a circular table facing the centre. C and E are not adjacent to each other. B is on the immediate left of E. H is on the immediate right of D. There are three persons between B and H. A is adjacent to F. F is on the immediate left of C. If each person interchanges his or her position with the person seated opposite, who will be on the right of D? 1) E 2) F 3) G 4) D 5) None of these