Question 70

Out of eight crew members three particular members can sit only on the left side. Another two particular members can sit only on the right side. Find the number of ways in which the crew can be arranged so that four men can sit on each side.

Solution

By permutation and Combination, we get

No. of ways our men can sit on left side = 3C2 * 4!

No. of ways our men can sit on right side = 4!

Total ways = Multiplication of the above two

= 3C2*4!*4!

= 1728

Hence D

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