testing header
Math Goodies is a free math help portal for students, teachers, and parents.
Free Math
Newsletter
 
 
Interactive Math Goodies Software

Buy Math Goodies Software
testing left nav
Math Forums @ Math Goodies
Math Forums @ Math Goodies
Home | Profile | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 Homework Help Forums
 Probability and Statistics
 word problem
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

cadillacdeville
New Member

USA
1 Posts

Posted - 11/12/2011 :  22:37:09  Show Profile  Reply with Quote
This is a two part question, I have figured out the first part, but the second part I do not understand. Please help!

First part: You are planning to draw 2 cards (playing cards) at random without replacement. My goal is to pull out a 4 on the first draw and a heart in the second draw and a heart in the second draw.

Second part: Now suppose there is a roll of quarters with one special quarter somewhere in the roll. As the roll of quarters gets bigger, your probability decrease. How many quarters would you need for the probability of selecting the special quarter to be the same as the probability of a pulling out a 4 on the first draw and a heart in the second draw without replacement?

Please help with problem
Go to Top of Page

royhaas
Moderator

USA
3059 Posts

Posted - 11/13/2011 :  14:34:04  Show Profile  Reply with Quote
If N is the number of quarters you need, then the probability of selecting a specific quarter in one draw is 1/N. What answer did you get for the first part of the problem?
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Math Forums @ Math Goodies © 2000-2004 Snitz Communications Go To Top Of Page
This page was generated in 0.04 seconds. Snitz Forums 2000
testing footer
About Us | Contact Us | Advertise with Us | Facebook | Blog | Recommend This Page




Copyright © 1998-2014 Mrs. Glosser's Math Goodies. All Rights Reserved.

A Hotchalk/Glam Partner Site - Last Modified 18 Dec 2014