Alisa T.

asked • 09/16/22

At a birthday party 3 girls and 3 boys are seated in a row. How many different arrangements are possible if:

a) the first seat is taken by a girl

b)boys take the first and last seat, and at least two of the girls shouldn’t sit together

1 Expert Answer

By:

Rachel L. answered • 09/16/22

Tutor
4.9 (177)

PhD in Physics with 15+ years of Teaching Experience
About this tutor ›
About this tutor ›

3 * 5!

The first seat is a girl. So 3 possibilities. Then the rest 2 girls and 3 boys can sit wherever.



Upvote • 0 Downvote
More
Report

Rachel L.

tutor
3 * 2 * (4! -3*3! ) first seat, 3 boys, last seat, 2 boys. Then ( the rest 4 people sit wherever - two girls sit together)
Report

09/16/22

Rachel L.

tutor
Didn't say which two girls. So *3
Report

09/16/22

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.