Art of Problem Solving Intermediate Counting and Probability Textbook and Solutions Manual 2-Book Set Paperback – January 1, 1965

AOPS is the best series for kids who want to get more training on math. Solution book is a plus to explain how to understand the theories and further clarify the strategies for problem solving.

New and very good book. I am impressed, and will order more.

My high school sophomore loves math and the Art of Problem Solving books allow her to explore a variety of topics. The books encourage a natural understanding of the subject and are very user friendly.

Fast shipping! This book is helpful and amazing!

Intermediate Counting and Probability provides in-depth study for high school students, especially for their preparation for AMC contest. The book is suitable for students of ages 13-15.

Very useful in preparing for olympiads.. brings you into medium-USAMO level stuff which was more than I expected to get out of this book. Beautifully done.