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Saturday, 31 October

JEE Main 2022 · MathsNumerical answerNumerical valueMediumCalculation

JEE Main 30 June 2022, Shift 1, Maths Q29

Question 29 of 90 in this shift, Maths question 29 of 30, Section B.

The probability distribution of X is : X: 0, 1, 2, 3 P(X): 1−d4\frac{1-d}{4}, 1+2d4\frac{1+2d}{4}, 1−4d4\frac{1-4d}{4}, 1+3d4\frac{1+3d}{4} For the minimum possible value of d, sixty times the mean of X is equal to __________.

Official answer

75

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 108 of the 174 JEE Main shifts held from 2017 to 2026.