Which book should i buy iit mathematics by ML khanna (arihant series) or new pattern mathematics for jee advanced by cengage? or any other book u can suggest me for mathematics

Reference Books for Engineering Entrance Exam

Chemistry
Ø NCERT Chemistry text books of class XI and class XII (usually sufficient)
Ø Organic Chemistry by Morrison and Boyd (only for understanding concepts)
Ø Arihant Organic Chemistry Objective (Optional)
Ø Organic, Physical and Inorganic Chemistry books by OP Tandon
Ø Physical Chemistry by RC Mukherjee
Mathematics
Ø NCERT class XI and class XII books (all students should start with these early)
Ø For best concepts you can purchase ‘IIT Mathematics’ by ML Khanna
Ø New Pattern IITJEE Mathematics of Arihant Publications by Dr SK Goyal
Ø Books by SL Loney (Good for coordinate Geometry and Trigonometry)
Ø RD Sharma
Ø GN Bernnam – only use it for calculus as other sections are too advanced for JEE
Physics
Ø NCERT Physics for Class XI and XII (good introduction)
Ø Concepts of Physics, Vol.-I & II, by HC Verma
Ø Physics by D.C. Pandey, Arihant Publications
Ø Fundamentals of Physics, by Halliday, Resnik and Walker (Optional)