Question 1152612
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Obviously, you should relate 2 with major defects to to the total of 6 = 4+2 defective.


The answer is  P = {{{2/6}}} = {{{1/3}}}.
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Notice that the problem's formulation is &nbsp;<U>ambiguous</U>.


Because it does not instruct the reader if these &nbsp;4 &nbsp;minor and &nbsp;2 &nbsp;major defects are for separate items, &nbsp;or &nbsp;2 &nbsp;are the part of &nbsp;4.


I solved the problem assuming that they are separate, 

but another interpretation is &nbsp;ALSO &nbsp;POSSIBLE, &nbsp;leading to another answer.



Actually, &nbsp;it is a &nbsp;BIG &nbsp;FAULT &nbsp;when the problem admits different interpretations.