JEE Main 2019MathematicsProbabilityEasyMCQ

JEE Main 2019 — Probability Question with Solution

JEE Main 2019 (10 Jan Shift 2)

Question

If the probability of hitting a target by a shooter, in any shot is 13, then the minimum number of independent shots at the target required by him so that the probability of hitting the target at least once is greater than 56, is:

Choose an option

Show full solutionCorrect option: B
Correct answer
B5

Step-by-step explanation

Phitting target=13

Let number of trials =n

Phitting  target  atleast once

=1-P not hit

=1-23n>56

⇒16>23n

So minimum number of trials =5

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About this question

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.