Question

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

Answer 1

Answer:

2{(« + 1)! - 1} = n (n + 1)! Example 14 In a group of 8 girls, two girls are sisters. The number of ways in which the girls can sit so that two sisters are not sitting together is (a) ... can sit - the number of ways in which two sisters are together = 8! - (2) (7!) ... and w women are to be seated in a row so that no two women sit together.

Step-by-step explanation: