SOLUTION: How many ways can six out of 12 cars be lined up in order, followed by lining up four out of five trucks in order? choices are 79833600 475200 99792600 4620 I dont get any

Algebra ->  Probability-and-statistics -> SOLUTION: How many ways can six out of 12 cars be lined up in order, followed by lining up four out of five trucks in order? choices are 79833600 475200 99792600 4620 I dont get any      Log On


   

Question 472441: How many ways can six out of 12 cars be lined up in order, followed by lining up four out of five trucks in order?
choices are 79833600 475200 99792600 4620 I dont get any of these choices
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

How many ways can six out of 12 cars be lined up 'in order' is 12P6

Ways of lining up four out of five trucks 'in order' is 5P4 



How many ways can six out of 12 cars be lined up in order, 

followed by lining up four out of five trucks in order?

   12P6*5P4 = 665,280*120 = 79,833,600 ways



For ex 12P6 can be found on a scientific calculator : 12!/6! = 665,280