Math question

Test Preparation SAT Preparation
1

<p>Of 6 radios in a store, 4 are defective and 2 are not. A customer chooses two at random. If the first chosen is not defective. What is the probability that the second radio chosen will also be not defective?
A) 1/10
B) 2/5
C) 1/2
D) 3/5
E) 2/3</p>

<p>Guys, I need a explanation to this one. Thanks a bunch! ;)</p>

2

<p>I get 1/5 as the correct answer, which is not one of the choices.</p>

3

<p>it is D. can u provide an explanation</p>

4

<p>There is a typo in your problem statement</p>

<p>The correct problem is this:</p>

<p>Of 6 radios in a store, 2 are defective and 4 are not. A customer chooses two at random. If the first chosen is not defective. What is the probability that the second radio chosen will also be not defective?
A) 1/10
B) 2/5
C) 1/2
D) 3/5
E) 2/3</p>

<p>The answer to this problem is (D).</p>

<p>The answer to the problem you posted (with the typo) is an NoCokePepsi notes, 1/5.</p>

<p>If with the correction you still need an explanation please repost as a new thread.</p>

<p>Also see a previous thread:</p>

<p><a href=“http://talk.collegeconfidential.com/sat-preparation/1198653-math-problems-help-needed.html[/url]”>http://talk.collegeconfidential.com/sat-preparation/1198653-math-problems-help-needed.html&lt;/a&gt;&lt;/p&gt;

5

<p>thanks for redirecting me to the other thread. I now understand. :)</p>