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.

Explanation

To solve the problem of seating six persons A, B, C, D, E, and F at a circular table with the specified conditions, we can break down the solution into clear steps.

### Step-by-Step Solution:

1. **Fix A's Position**:
In circular permutations, we can fix one person's position to eliminate the effect of rotations. Let's fix person A at a specific position.

**Hint**: Fixing one position helps simplify the counting of arrangements in circular permutations.
...