JEE Main 2019 — Probability Question with Solution
From: JEE Main 2019 (Online) 12th April Evening Slot
Question
A person throws two fair dice. He wins Rs. 15 for throwing a doublet (same numbers on the two dice), wins
Rs. 12 when the throw results in the sum of 9, and loses Rs. 6 for any other outcome on the throw. Then the
expected gain/loss (in Rs.) of the person is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C loss
Step-by-step explanation
When two dice are thrown then sample space will {(1, 1), (2, 2) ....... (6, 6)} contain total 36 elements number of cases.
Then the expectation will be
= loss
Then the expectation will be
= loss
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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.