Multiple choice

There are 20 students in a class. Vinod is one of them. The teacher picks one student randomly at the end of the class and asks him a question. This system has been followed to keep the students attentive in the class. Which of the following cases will have the highest probability of Vinod being picked?

  1. Vinod not being picked in last 10 classes and 18 students present in the class.

  2. Vinod not being picked in last 5 classes and 16 students present in the class.

  3. Vinod being picked in the last class and 18 students present in the class.

  4. Vinod not being picked in last 12 classes and 16 students present in the class.

  5. Vinod being picked in the last class and 15 students present in the class.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Here the probability of Vinod being selected is 1/15 which is highest among the given options.

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