Hi,

Ten students are lined up to be seated.

in how many ways can 5 students be seated in a row of 5 chairs?

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

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

     10people   x    9people     x      8people     x      7people  x     6people

                                 

      10   x    9   x   8   x   7 x 6 = 30,240 ways

Wish You the Best in your Studies.

  

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