Question

21 members of a council sit on a round table .In how many ways secretary and joint secretary can sit on both side on the chairman​

Answer 1

2 * 18! ways secretary and joint secretary can sit on both side on the chairman​ on round table if 21 members in a  council

Step-by-step explanation:

21 members of a council sit on a round table .

Number of  ways secretary and joint secretary can sit on both side on the chairman​

secretary and joint secretary  sit on  on both side on the chairman​ in 2 ways

Remaining Members = 21 - 3 = 18

18 members can sit in 18!  Ways  as round Table

Total number of Ways = 2 * 18!

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