SOLUTION: Ten students are lined up to be seated. in how many ways can 3 of them be seated in a row of 3 chairs? Repeating of digits are not allowed Can you help me with this?..thank you

Algebra ->  Permutations -> SOLUTION: Ten students are lined up to be seated. in how many ways can 3 of them be seated in a row of 3 chairs? Repeating of digits are not allowed Can you help me with this?..thank you       Log On


   

Question 1173436: Ten students are lined up to be seated.
in how many ways can 3 of them be seated in a row of 3 chairs?
Repeating of digits are not allowed
Can you help me with this?..thank you so much
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Ten students are lined up to be seated.

in how many ways can 3 of them be seated in a row of 3 chairs?

Depends on how many people You have to choose from for each chair:

 10people for the 1st chair, 9 for the 2nd... etc 

     10people   x    9people     x      8people         

 1stChair         2ndChair         3rdChair      

      10   x    9   x   8    = 720 ways

Wish You the Best in your Studies.