10 pens are defective pens mixed in 100 good pens. One pen is taken out at random then the probability that it is a good pen is
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Answer:
100/110
Step-by-step explanation:
no.of defective pens n(d)=10
no.of good pens n(g)=100
total no of pens n(s)=110
probability of good pens=n(g)/n(s)
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