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CBSE Class 11-science Answered


In how many ways can 5 girls and 3 boys be seated in a row so that no two boys are together?

Asked by Topperlearning User | 13 Sep, 2016, 02:58: AM
Expert Answer

Let us first seat the 5 girls. This can be done in 5! Ways. For each such arrangement, the three boys can be seated only at the cross marked places.

                   GGGGG
There are 6 cross marked place and the three boys can be seated in  ways. Hence, by multiplication principle, the total numbers of ways=5!=14400
Answered by | 13 Sep, 2016, 04:58: AM
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