JEE Main 2020 — Probability Question with Solution
From: JEE Main 2020 (Online) 7th January Evening Slot
Question
In a workshop, there are five machines and the probability of any one of them to be out of service on a day is
. If the probability that at most two machines will be out of service on the same day is , then k is equal to :
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
Probablity of at most two machines will be out of service =
5C0 + 5C1 + 5C2 =
=
k =
5C0 + 5C1 + 5C2 =
=
k =
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This is a previous-year question from JEE Main 2020, 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.