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Q1-There are 5 girls and 6 boys .How many arrangements can be made if all the girls must at odd places in a row?

Q1-There are 5 girls and 6 boys .How many arrangements can be made if all the girls must at odd places in a row?

Grade:11

1 Answers

Daniel George Mathew
27 Points
10 years ago

So basically what you want to do is place the boys first

 

_B_ B_B_B_B_B_

The _''s represent where the girls are to be placed.

therefore no of ways is 

7P5

since there are 7 spots and 5 girls to be permuted.

Hope this helped!

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