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Introduction to Counting & ProbabilityFundamentals of counting and probability, including casework, multiplication, permutations, combinations, Pascal's triangle, probability, combinatorial identities, and the Binomial Theorem. 
12 weeks 
12 weeks ARE YOU READY? DO YOU NEED THIS? 
Schedule
Monday
Jan 13  Mar 30 
7:30  9:00
PM ET
Jan 13  Mar 30
7:30  9:00 PM Eastern 6:30  8:00 PM Central 5:30  7:00 PM Mountain 4:30  6:00 PM Pacific Click here to see more time zones 
Homero Renato Gallegos Ruiz 
$340
$385 w/books

$340
WAITLIST
With Books $385

Wednesday
Jan 29  Apr 15 
7:30  9:00
PM ET
Jan 29  Apr 15
7:30  9:00 PM Eastern 6:30  8:00 PM Central 5:30  7:00 PM Mountain 4:30  6:00 PM Pacific Click here to see more time zones 
sarahmarie belcastro 
$340
$385 w/books

$340
ENROLL
With Books $385

Tuesday
Feb 11  Apr 28 
7:30  9:00
PM ET
Feb 11  Apr 28
7:30  9:00 PM Eastern 6:30  8:00 PM Central 5:30  7:00 PM Mountain 4:30  6:00 PM Pacific Click here to see more time zones 
Ian Osborn 
$340
$385 w/books

$340
ENROLL
With Books $385

Thursday
Mar 5  May 21 
7:30  9:00
PM ET
Mar 5  May 21
7:30  9:00 PM Eastern 6:30  8:00 PM Central 5:30  7:00 PM Mountain 4:30  6:00 PM Pacific Click here to see more time zones 
Carl Yerger 
$340
$385 w/books

$340
ENROLL
With Books $385

Sunday
Mar 22  Jun 14 
7:30  9:00
PM ET
Mar 22  Jun 14
7:30  9:00 PM Eastern 6:30  8:00 PM Central 5:30  7:00 PM Mountain 4:30  6:00 PM Pacific Click here to see more time zones 
Christian Hokaj 
$340
$385 w/books

$340
ENROLL
With Books $385

Friday
Apr 24  Jul 17 
7:30  9:00
PM ET
Apr 24  Jul 17
7:30  9:00 PM Eastern 6:30  8:00 PM Central 5:30  7:00 PM Mountain 4:30  6:00 PM Pacific Click here to see more time zones 
Eric Wofsey 
$340
$385 w/books

$340
ENROLL
With Books $385

Summer 2020  This course will be offered in Summer 2020. Click here to join our mailing list to be notified when the course schedule is available. 
AoPS Holidays
There are no classes May 23–25, July 3–5, and September 5–7.
Who Should Take?
This course is appropriate for students in grades 69 who have mastered basic algebra up through solving linear equations and manipulating multivariable expressions. Students who have completed our Introduction to Algebra A course should have sufficient background. This course is roughly the same difficulty as our Introduction to Number Theory class. For those preparing for contests, this course should help with MATHCOUNTS and the AMC 8/10/12 tests.Lessons
Lesson 1  Lists, Venn Diagrams, Addition, Multiplication 
Lesson 2  Casework, Constructions, and Restriction 
Lesson 3  Overcounting and Combinations 
Lesson 4  Combinations and Distinguishability 
Lesson 5  Challenging Problems Day 
Lesson 6  Introduction to Probability 
Lesson 7  Probability and Arithmetic 
Lesson 8  Geometric Probability, Think About It!, and Expected Value 
Lesson 9  Pascal's Triangle and Identities 
Lesson 10  The Hockey Stick Identity 
Lesson 11  The Binomial Theorem 
Lesson 12  Challenging Problems Day 2 
Required Textbook
Introduction to Counting & Probability
A thorough introduction for students in grades 710 to counting and probability topics such as permutations, combinations, Pascal's triangle, geometric probability, basic combinatorial identities, the Binomial Theorem, and more.
