In how many different ways can 3 boys and 3 girls sit on a bench such that the girls always sit ...
In how many different ways can 3 boys and 3 girls sit on a bench such that the girls always sit together?
Answer/Solution
144
Steps/Work
We can think of the girls as one unit.
The number of ways to arrange 4 units in order is 4!
The girls can have different arrangements, so we multiply this by 3!
The number of ways to sit is 4!*3!=144
The answer is E.
The number of ways to arrange 4 units in order is 4!
The girls can have different arrangements, so we multiply this by 3!
The number of ways to sit is 4!*3!=144
The answer is E.