Log in Sign up
Learn Coach About Donate
  • Home
  • Knowledge Map
  • Math
    MathKnowledge Map
    • Arithmetic and pre-algebra
    • Probability and statistics
    • Algebra
    • Differential equations
    • Geometry
    • Linear algebra
    • Trigonometry and precalculus
    • Applied math
    • Calculus
    • Recreational mathematics
  • Science & Economics
    Science & Economics
    • Biology
    • Microeconomics
    • Chemistry
    • Macroeconomics
    • Physics
    • Computer science
    • Cosmology and astronomy
    • Healthcare and medicine
    • Organic chemistry
    • LeBron asks
    • Finance and capital markets
    • Projects
  • Computer Science
    Computer Science
    • Drawing
    • Animation
    • Programming Basics
    • User Interaction
  • Humanities
    Humanities
    • World History
    • American Civics
    • Art History
  • Test Prep
    Test Prep
    • SAT Math
    • California Standards Test
    • GMAT
    • Competition Math
    • CAHSEE
    • IIT JEE
  • Partner Content
    Partner Content
    • Stanford School of Medicine
    • MIT+K12
  • Talks and Interviews
  • Coach Resources
  • Browse all videos
Trigonometry and precalculus
Probability and combinatorics

Basic probability

  1. Basic Probability
  2. Example: Marbles from a bag
  3. Example: Picking a non-blue marble
  4. Example: Picking a yellow marble
  5. Probability 1

Probability 1

 
  • About
  • Our Mission
  • Blog
  • Our Team
  • Our Interns
  • Our Supporters
  • Discovery Lab
  • MCAT Video Competition
  • Help
  • Report a Problem
  • FAQ
  • Contact Us
  • Contact
  • Press
  • Coaching
  • Coach Dashboard
  • Teacher Toolkit
  • Coaching Tips
  • Pilot Schools
  • Careers
  • Full Time
  • Internships
  • More
  • Donate
  • Contribute
  • Shop KA
  • International
  • Translate our content
  • Social
  • Facebook
  • Twitter
  • Life at KA
Terms of Use
Privacy Policy
© 2013 Khan Academy
Except where noted, all rights reserved.