Ask
your own question, for FREE!
Mathematics
27 Online
There are 5 boys and 4 girls in my class. In how many ways can they be seated in a row of 9 chairs such that at least 3 girls are all next to each other?
Still Need Help?
Join the QuestionCove community and study together with friends!
have you learned factorials or the use of the exclamation mark ?
yes factorials
i'm not really sure about this, but I think this is how it works having 3 girls together, 5 boys and 1 girl alone. 3! x 6 x 5! x 5 = 21600 having 4 girls together and 5 boys 4! x 6 x 5! = 17280 add them 21600 + 17280 = 38880 possibilities
its not right i was thinking of 36120 possibilites
mmm I'm not getting that number... let me think again
Still Need Help?
Join the QuestionCove community and study together with friends!
me too
case I ; 3 girls.. 3! * 7 ! case 2; 4 girls.. 4! * 6!... Try this..
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
willowjade:
Is this a good poem for an english assignment? I wrote it about someone a weeks ago.
Gucchi:
was wondering where the activation energy or Ea would go. chem help
gelphielvr:
Ok this one In a game, your character cleverly places an electronic bug on an unsuspecting felonu2019s jacket to track his movements.
gelphielvr:
Which statement regarding the power bar is NOT true? A. It fills up over time. B. It is a component of the gameu2019s passive visual interface. C. It indicates the time remaining to complete a task. D. It is a component of the gameu2019s active visual interface.
Caramelmuncher:
hey guys I'm thinking of making a song with a saxet, any ideas for background ins
Jaynater:
The QC Ambassador symbol looks like the COV symbol from borderlands 3 when it's really tiny on my big screen.
cora1:
Love... I know you for almost a year I know you like the back of my hand your bea
Sailor:
Homework help [College Algebra] For the following exercises, use this scenario: A tumor is injected with 0.
BlkOps77:
Roses are red, Violets are blue, my heat is dead because of you. thought my life had room for 2 but there was never a me n you.
56 minutes ago
7 Replies
0 Medals
9 hours ago
12 Replies
3 Medals
10 hours ago
2 Replies
1 Medal
10 hours ago
2 Replies
1 Medal
9 hours ago
33 Replies
2 Medals
10 hours ago
3 Replies
0 Medals
11 hours ago
4 Replies
1 Medal
11 hours ago
5 Replies
3 Medals
11 hours ago
36 Replies
2 Medals