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???????? Important information in the DESCRIPTION ???????? ???? I made THIS VIDEO so that YOU DO BETTER in your math studies ???? ▶Be part of the Math2me COMMUNITY, PRESS or SHARE the FOLLOWING LINK: [Youtube subscription] http://bit.ly/yt_math2me ---------------------------------------------------------------------------------------- Learn MATH on your PHONE (videos + exercises) ????Download the APP (Android): https://bit.ly/m2m_android ????Download the APP (iOs): https://bit.ly/m2m_app ✅ On OUR SOCIAL NETWORKS (follow us): ■ Subscribe (preschool/elementary math): http://bit.ly/yt_mk ■ TikTok: / math2me ■ Facebook: / math2me ■ Instagram: / math2me ■ Twitter: / math2me ???? WEBSITE http://math2me.com ???? VISIT our COURSES Platform http://prime.math2me.com ------------------------------------------------------------ We also have our videos organized by subjects, here is our PLAYLIST: Arithmetic http://bit.ly/2qnc7t4 Algebra and linear algebra http://bit.ly/2pp2Brj Geometry and Trigonometry http://bit.ly/2qXx0xB Analytical Geometry and Pre-Calculus http://bit.ly/2qsfQVz Differential and Integral Calculus & Differential Eqs http://bit.ly/2rHjSxY Probability and Statistics http://bit.ly/2qXxgg3 Physics http://bit.ly/2iADbQF What good is math to me? http://bit.ly/2j9pVnc What good is math? │ No limits http://bit.ly/2opN3je Tricks http://bit.ly/2ql4pnn -------------------------------------------------- 00:00 Welcome 00:22 Presentation of the problem 00:44 Analysis of the problem 05:36 Solution of the problem 11:18 Final comments #ProfeAndalon #Combinatorics #Contests