Question
Mathematics Question on permutations and combinations
20 persons are invited for a party. the number of ways in which they and the host can be seated at a circular table y two partocular person can be seated on either side og the host is qual to
A
2.(18)!
B
18!.3!
C
19!.2!
D
none of the above
Answer
2.(18)!
Explanation
Solution
The correct option is (A): 2.(18)!