Deep Priya Dhillon and R. S. Dhillon's Perfect PSA Problem Solving Assessment with Answers / Solutions / Explanations (Class 11) 2nd Edition is a comprehensive book for class 11 exams. The book comprises of relevant study material, solved examples, multiple choice questions, practice papers for students along with answers and explanations. In addition several sections that help in making a clear understanding of various concepts. This book is essential for candidates giving their class 11 CBSE exams. This book is also helpful for candidates attempting competitive examinations for an understanding and practice of Quantitative Reasoning, Qualitative Reasoning and Language Conventions.