JEE Main 2002 — Probability Question with Solution
From: AIEEE 2002
Question
A dice is tossed times. Getting an odd number is considered a success. Then the variance of distribution of success is :
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Total no of trials = 5
n = 5
Odd no possibe are = {1, 3, 5} =3
Sample space = {1, 2, 3, 4, 5, 6} = 6
Probablity of getting odd number = =
p =
Formula for variance = npq
where q = 1 - p = 1 - =
Variance = =
n = 5
Odd no possibe are = {1, 3, 5} =3
Sample space = {1, 2, 3, 4, 5, 6} = 6
Probablity of getting odd number = =
p =
Formula for variance = npq
where q = 1 - p = 1 - =
Variance = =
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This is a previous-year question from JEE Main 2002, covering the Probability chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.