A) \[\frac{4}{7}\]
B) \[\frac{3}{7}\]
C) \[\frac{2}{7}\]
D) \[\frac{1}{7}\]
Correct Answer: D
Solution :
Total number of bulbs = 200 Total number of defective bulbs \[=1\,\,(7-6)+2\,\,(6-5)+3\,\,(5-4)+4\,\,(4+4-3)+5\,\,(3)\]=25. Answer is \[\frac{25}{175}=\frac{1}{7}.\]You need to login to perform this action.
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