The updated 4th edition of the book "Errorless 13 Years UPPSC General Studies Prelim Papers 1 & 2 Solved Papers (2010 - 22)" consists of:# Past 13 years Solved papers of Uttar Pradesh PSC Exam Paper 1 from 2010 - 2022 along with 7 Prelim Paper 2 of Aptitude from 2016 - 2022.# In all the book contains 2650+ MCQs with detailed explanations.# The USP of the book is the detailed explanation of each question.# The answer key has been verified with the UPPSC.# The book is also useful for UPSC and other PSC Exams.