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Saturday, 10 October

JEE Main 2023 · MathsMultiple choiceSingle correctMediumMulti-step

JEE Main 13 April 2023, Shift 2, Maths Q19

Question 19 of 90 in this shift, Maths question 19 of 30, Section A.

The random variable X follows binomial distribution B(n,p)(n, p), for which the difference of the mean and the variance is 11. If 2P(X=2)=3P(X=1)2P(X=2)=3P(X=1), then n2P(X>1)n^2P(X>1) is equal to
  1. (1)1515
  2. (2)1616
  3. (3)1212
  4. (4)1111Official answer

Official answer

Option 4

NTA final key.

Chapter
Probability
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.