Answers

2016-02-01T19:53:59+05:30
No.of bulbs which are defective = 12
Total no.of bulbs = 200
Probability of not getting defective bulb = (200-12)/200 = 188/200 = 94/100 = 0.94 
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No.of bulbs which are defective = 12
Total no.of bulbs = 200
Probability of not getting defective bulb = (200-12)/200 = 188/200 = 94/100 = 0.94 
2016-02-01T20:02:15+05:30
Total number of bulbs=200
Number of defective bulbs=18
Good quality bulbs=188
Probability (not getting a defective bulb) =188/200
=94/100
=0.94
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