Mathematics · Probability and Statistics
A remote village has exactly 1000 vehicles with sequential registration numbers starting from 1000. Out of the total vehicles, 30% are without a pollution clearance certificate. Further, even- and odd-numbered vehicles are operated on even- and odd-numbered dates, respectively. If 100 vehicles are chosen at random on an even-numbered date, what is the expected number of vehicles without a pollution clearance certificate?
- 115
- 230✓
- 350
- 470
Correct answer
30
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