Question

5 Boys and 4 girls are to be seated in row. If the girls occupy even places then the no. of such arrangements a) 288 b) 2808 c) 2008 d) 2880

Answer 1

Answer:

Step-by-step 2808explanation:

Answer 2

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5 boys and 4 girls are to be seated in a row so that the girl gets the even places.

The 5 boys can be seated in 5! Ways.

For each of the arrangement, the 4 girls can be seated only at the places which are cross marked to make girls occupy the even places).

B x B x B x B x B

So, the girls can be seated in 4! Ways.

Hence, the possible number of arrangements = 4! × 5! = 24 × 120 = 2880

Answer = (D)

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