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Grade: 11
```
In how many ways can 7 persons form a ring? In how many ways can 7 Englishmen and 7 Americans sit down at a round table, no two Americans being together?
In how many ways can 7 persons form a ring? In how many ways can 7 Englishmen and 7 Americans sit down at a round table, no two Americans being together?

```
2 years ago

## Answers : (1)

Arun
25768 Points
```							Dear student No of ways of forming a ring by 7 persons = (7 – 1)!  = 6! = 720 Total no of ways of seating 7 english men and 7 americans when two americans are not together = 7 ! * 6!  = 5040 * 720 = 3628800  RegardsArun (askIITians forum expert)
```
2 years ago
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