Flag Magical Mathematics[Interesting Approach]> Permutation and Combinatiom
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Q1ThereQ1-There are 55 girls and 66 boys .How many arrangements can be made if all the girls must at odd places ina row?

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Azain Ahmed , 12 Years ago
Grade 11
anser 1 Answer
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Daniel George Mathew

Last Activity: 12 Years ago

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

rn

rn

_B_ B_B_B_B_B_

rn

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

rn

therefore no of ways is

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7P5

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

rn

Hope this helped!

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