SOLUTION: a container contains 10 electronic components. 4 of the components are defective. 2 components are selected from the container without replacement. Calculate the probability that t

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Question 1203291: a container contains 10 electronic components. 4 of the components are defective. 2 components are selected from the container without replacement. Calculate the probability that they are both non-defective.
Answer by ikleyn(52754) About Me  (Show Source):
You can put this solution on YOUR website!
.
The set of non-defective components has 10-4 = 6 elements, initially.


Therefore,

    P = %286%2F10%29%2A%28%286-1%29%2F%2810-1%29%29 = %286%2F10%29%2A%285%2F9%29 = 30%2F90 = reduce the fraction = 1%2F3.   ANSWER

Solved.

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The formula is self-explanatory.