Dear student Following are some of the principles of economics - 1. Decisions Involve Tradeoffs. 2. Opportunity Cost of Resource. 3. Cost-Benefit Analysis. 4. Response to Incentives. 5. Trading Services for Money. 6. Markets Organize Economic Activity. 7. Government and Market Efficiency. 8. Principal of Productivity. 9. Too Much Money Causes Inflation 10. Inflation and Unemployment Tradeoff Regards