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  • In a group of 8 girls, two girls are sisters. The number of ways in which the girls can sit in a row so that two sisters are not sitting together isOption: 1</st

In a group of 8 girls, two girls are sisters. The number of ways in which the girls can sit in a row so that two sisters are not sitting together is

Option: 1

4820


Option: 2

 2830


Option: 3

 2830


Option: 4

30240

 


Answers (1)

The required number of ways

= the number of ways in which 8 girls can sit in a row - the number of ways in which two sisters sit together

=8 !-(2)(7 !)=30240.

Posted by

Kshitij

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