The number of ways in which four persons be seated at a round table, so that all shall not have the same neighbours in any two arrangements,is

Explanation

To solve the problem of seating four persons at a round table such that no two arrangements have the same neighbors, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Arrangement at a Round Table**:
When arranging people in a circular formation, we can fix one person to eliminate the effect of rotations. This is because rotating the entire arrangement does not create a new arrangement.

2. **Fixing One Person**:
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