four boys and four girls are arranged in a circle. Find how many ways this can be done if:

- If two particular boys do not wish to sit next to one another?

Question

four boys and four girls are arranged in a circle. Find how many ways this can be done if:

- If two particular boys do not wish to sit next to one another?

anonymous · Answer

Use the permutation formula

anonymous · Answer

n!/(n-r)!, where n is the total number of boys and girls, and r is the number of boys and girls you're going to arrange at a time.

anonymous · Answer

In this case, you're only going to take 2 boy and 4girls at a time.
--> 8!/(8-6)!

anonymous · Answer

thats not the answer

anonymous · Answer

its 3600 its alright i got it do you think you can help me out with this one.

- if one particular boy wants to sit between two particular girls

anonymous · Answer

No can do.

anonymous · Answer

if one particular boy wants to sit between two particular girls. Thats what i need to find out:)

zarkon · Answer

wouldn't that be 240

anonymous · Answer

i have an idea. lets cheat

anonymous · Answer

the second one is 240 how did u get it?

anonymous · Answer

because it is late, i am tired, and i have to actually work tomorrow grrrr

anonymous · Answer

http://au.answers.yahoo.com/question/index?qid=20091124233748AAlwKnT

anonymous · Answer

lol that sucks

zarkon · Answer

$$2\times 5!$$

anonymous · Answer

these problems always make my head spin because i have to learn this stuff from scratch every time it seems. i am sure zarkon will have a cogent explanation

zarkon · Answer

the particular GBG...2ways to arrange the 3. then there are 5 people to fill the rest of the circle ...5! ways

anonymous · Answer

i see thanks:)