Given:-Number of boy=5Number of girls=5=(5!.5!)+(5!.5!)=(5!)2+(5!)2=5!.6!=2!.5!.5!Total number of boys and girls=5+5=10Number of way=10!-5!.6!Answer is above in table

Q. 615.0( 1 Vote )

Five boys and fiv

Class 11th Mathematics - Exemplar 7. Permutations and Combinations

Answer :

Given:-

Number of boy=5

Number of girls=5

=(5!.5!)+(5!.5!)

=(5!)²+(5!)²

=5!.6!

=2!.5!.5!

Total number of boys and girls=5+5=10

Number of way=10!-5!.6!

Answer is above in table

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