Conditional probability
Suppose a batch contains ten items, of which four are defective. Two items are drawn at random from the batch, one after the other, without replacement. What is the probability that:
I) Both are defective?
Ii) Is the second item defective?
Your answer:
I) Both are defective?
Ii) Is the second item defective?
Your answer:
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combinatoricsalgebranumbersGrade of the word problem
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