Question 870845
10 microwave ovens contains two defective units
In how many ways can a restaurant buy three of these units an receive 
 a) no defective units  8C3
 b) one defective unit  {{{(8C2)(2C1)}}}
 c) at least two non defective units? {{{(8C2)(2C1) + 8C3}}}
 d P = {{{((8C2)(2C1) + 8C3)/(10C3)}}}