Book excerpt: The Thomas Jefferson High School for Science and Technology (TJHSST) Admissions Test consists of three tests: Quant-Q Math test, Aspire Reading test, and Aspire Science test. The Quant-Q Math test measures pattern recognition, probability, combinatorics, out-of-the box algebra, geometry, and optimization.This book is designed to help you master the Quant-Q Math test. The book contains 13 topic-specific summaries and 10 problems relevant to each section, and a summary of advanced topics for Quant-Q Math Test. Along with the topic-specific lessons, there are 10 full-length practice tests with detailed solutions and explanations. It is recommended that you take Test 1 as a diagnostic test to understand your current level of expertise and in which area you need improvement. Afterwards, review the key lessons and essential theorems of the Quant-Q Math test. After completing the lessons, use the nine remaining practice tests to help improve your score and exhibit real test-taking conditions. There is no greater substitute than to study and practice.