18 guest have to be seated half on each side of a long table. 4 particular guests desired to sit on one particular side & 3 others on the other side. Determine the no. of ways.
4 particular guests want to sit on a particular side and 3 other guests on the other side. Thus, we have 11 guests, out of which 5 are to sit on the first side, and the remaining 6 on the other side.
∴Number of selections for the 2 sides =
Also, the 9 persons on each side of the table can be arranged in 9! ways.
Therefore, total number of arrangements =