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Question

In how many ways can 5 boys and 5 girls stand in a row so that no two girls maybe together?


A

5!2

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B

5!×4!

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C

5!×6!

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D

6×5!

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Solution

The correct option is C

5!×6!


Explanation for the correct option:

Finding the required number of ways:

The number of boys=5

The number of girls =5

The number of ways boys can be arranged =5!

Let ‘B' denotes the position of boys and ‘G’ denotes the position of girls.

Then the arrangement of girls standing in a row where no two girls may be together is as follows

_ B G B G B G B G B G

There are 6 positions for girls where no two girls are together

So, the number of ways, the girls can be arranged =6!

Hence the required number of ways =5!×6!

Thus, option (C) is correct.


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