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| Mathematics | ||
| math001 | Basic Math and Algebra | US$5.99 |
| math002 | Pre-Calculus and Introduction to Probability | US$5.99 |
| math003 | Methods of Applied Mathematics | US$5.99 |
| math004 | Mathematics - Trigonometry | US$5.99 |
| math101 | Basic Mathematics | US$7.99 |
| math102 | Probability Theory and Introductory Statistics | US$7.99 |