Question: among 15 clocks there are two deffectives . in how many ways can inspector chose three of clocks for inspection that; a, there is no
among 15 clocks there are two deffectives . in how many ways can inspector chose three of clocks for inspection that;
a, there is no restricton
b, none of deffective clock is included
c, only one of deffecyive clock is included
- d, two of the deffecyive clock is included
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