A Comprehensive book is very useful for SSC, Bank, Railways, NDA, CDS, B.Ed, BBA, MBA, BSF, ITBP, SSB, CPO, Delhi Police, CAPF, BSF, RPF, IB, CRPF, BRO, TGT/PGT, LIC, GIC, EPFO, ESIC, NTSE, Sainik School, Army, Navy, Air Force etc. Entrance Examinations.