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In a family of two children, what is the probability that both are girls if at least one is a girl?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

involve calculations of conditional probabilities. You may use Bayes' Theorem together with any of the 10 rules of probability theory to solve the following problems. For each problem, specify the sample space S, specify the event using E or F (with or without subscripts) and make sure you cite the rule you're using in each step of your solution.

In a family of two children, what is the probability that both are girls if at least one is a girl?

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