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Problem
A box holds 10 light-bulbs, of which 3 are defective and 7 are good. Three bulbs are selected at random without replacement. Determine the probability that at least one selected bulb is defective. a)
49
60
\dfrac{49}{60}
60
49
b)
7
24
\dfrac{7}{24}
24
7
c)
17
24
\dfrac{17}{24}
24
17
d)
21
40
\dfrac{21}{40}
40
21
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