JEE Main 2019 — Probability Question with Solution
From: JEE Main 2019 (Online) 10th April Morning Slot
Question
Assume that each born child is equally likely to be a boy or a girl. If two families have two children each,
then the conditional probability that all children are girls given that at least two are girls is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
A = At least two girls
B = All girls
B = All girls
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Probability chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →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.