JEE Main 2019 — Probability Question with Solution
From: JEE Main 2019 (Online) 9th April Morning Slot
Question
Four persons can hit a target correctly with
probabilities
, , and
respectively. if all hit
at the target independently, then the probability that
the target would be hit, is :
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Let four persons are A, B, C and D.
Probablity of hitting a target by them,
P(A) =
P(B) =
P(C) =
P(D) =
Probablity of hitting target atleast once = 1 - Probablity of not hitting by anybody
P(Hit) = 1 -
= 1 -
= 1 -
=
Probablity of hitting a target by them,
P(A) =
P(B) =
P(C) =
P(D) =
Probablity of hitting target atleast once = 1 - Probablity of not hitting by anybody
P(Hit) = 1 -
= 1 -
= 1 -
=
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This is a previous-year question from JEE Main 2019, 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.