For Competitive Examinations(Bank P.O, railway, S.S.C, Police, ..) With Solution Table of Contents 1.Numbers 2. H.C.F & L.C.M 3. Decimal Fractions 4. Arithmetic , Geometric & Harmonic Progressions 5. Simplification 6. Square Roots & Cube Roots 7. Average 8. Problems on Numbers 9. Problems on Ages 10. Surds and Indices 11. Logarithms 12. Percentage 13. Profit & Loss 14. Ratio & Proportion 15. Partnership 16. Mixture 17. Compound Proportion 18. Time & Work 19. Pipes and Cistern 20. Time & Distance 21. Problems on Trains 22. Boats and Stream 23. Simple Interest 24. Compound Interest 25. True Discount 26. Banker's Discount 27. Area 28. Volume 29. Races 30. Calender 31. Clocks 32. Shares & Dividend 33. Permutations and Combinations 34. Probability 35. Trignometry 36. Series 37.Tabulation 38. Pie-Chart 39. Bar-Graphs 40. Line Graphs