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IIT JEE 2006 Paper : MATHEMATICS Section III - Comprehension Passage 2

Each comprehension passage contains 3 questions.
Each question below has only one correct answer.
In the IIT-JEE, you will be awarded 5 marks for each correct answer and −2 for each incorrect answer.
You will be awarded 0 marks for not attempting a question.

You are given n boxes numbered 1 to n. The ith box contains i white and (n + 1 − i)red balls. Let Ei and W respectively denote the event of selecting ith box at random and the event that the ball drawn from the selected box is white.

Quiz Review
Multiple choice

Your Performance  

If P(Ei) ∝ i for i = 1, 2, 3,....,n then limn → ∞ P(W) is

  1

  2/3

  3/4

  1/4

  Half-n-half Clue



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