Question 1203663


(a)   How many possible choices of {{{10}}} laptops can be made?

      {{{C(105,10)  = 28848458598960}}}



(b)   How many of these possible selections will not contain any defective laptops?

      {{{C((105-10),10) = C(95,10) = 10104934117421}}}



(c)   How many of the possible selections will contain at least one defective laptop?

       {{{C(105,10)  - C(95,10) = 28848458598960 - 10104934117421 = 18743524481539}}}



(d)    How many of the possible selections will contain exactly one defective laptop?

       {{{C(10,1)*C(95,9) = 10*1174992339235 =  11749923392350}}}