xo_caroline_xo
New member
- Joined
- Sep 6, 2006
- Messages
- 23
question: Ten students have been nominated for the positions of secretary, treasurer, social convenor, and fundraising chair. In how many ways can these positions be filled if the Norman twins are running and plan to switch positions on occasion for fun since no one can tell them apart?
so far i'm using the formula;
n!
a!b!c!
however, i dont know what numbers i should plug for the variables, because when i did substitute n = 10 (since there are 10 students) over (divide) by 2 since there are 1 sets of twins, i got the answer 1 814 400 but, the answer of the back of the book is 6144...any advice would be appreciated...thanks!
caroline
so far i'm using the formula;
n!
a!b!c!
however, i dont know what numbers i should plug for the variables, because when i did substitute n = 10 (since there are 10 students) over (divide) by 2 since there are 1 sets of twins, i got the answer 1 814 400 but, the answer of the back of the book is 6144...any advice would be appreciated...thanks!
caroline