<table><tr><th>From:</th><th>Barnaby Marsh &lt;</th></tr><tr><td>Sent:</td><td>Saturday, September 30, 2017 11:26 PM</td></tr><tr><td>To:</td><td>Jeffrey E.</td></tr><tr><td>Subject:</td><td>Re:</td></tr></table>

nonsense! possible combinations say nothing about probabil=ty

On S=t, Sep 30, 2017 at 6:23 PM, Jeffrey E. <jeevacation@gmail.com>=/span> wrote:

=A0Combinations in the Sample Space <http://mathforum.org/dr.math/faq/faq.prob.intro.html#note>

In a two-child family, there are four and only four possible combinations o= children. We will label boys B and girls G; in each case the first letter represents the oldest child:

{BB, BG, GB, GG}

When we know that one child is a boy, there cannot be two girls, so the sam=le space shrinks to:

{BB, BG, GB}

Two of the possibilities in this new sample space include girls:

## {BG, GB}

and since there are two combinations out of three that include girls, the probability that the second child is a girl is 2/3.

=lease note

The information contained in this communication is c=nfidential, may be attorney-client privileged, may constitute inside in=ormation, and is intended only for the use of the addressee. It is the =roperty of JEE

## {BG, GB} (cont.)

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