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A box contains 25 parts, of which three are defective and 22 are non-defective. ...
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A box contains 25 parts, of which three are defective and 22 are non-defective. If two parts are selected randomly and without replacement, the probability that both are defective is
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‘n Houer bevat 25 onderdele waarvan drie defektief en 22 nie-defektief is. Indien twee onderdele ewekansig en sonder terugplasing gekies word, is die waarskynlikheid dat beide defektief is
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