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Prealgebra
Number
Theory
Counting and Probability
Precalculus
Geometry
Algebra
Intermediate Algebra
| Status | Title | Difficulty |
| 1893. Recurrent Sequence Value | Level 3 | |
| 1894. Trigonometric Identity Simplification 4 | Level 1 | |
| 1895. Determinant Product Calculation | Level 1 | |
| 1896. Trigonometric Difference Computation | Level 3 | |
| 1897. Line Segment Midpoint 1 | Level 1 | |
| 1898. Sphere Center Calculation | Level 2 | |
| 1899. Cosine Sequence Minimum | Level 5 | |
| 1900. Tangent and Sine Sum | Level 2 | |
| 1901. Inverse Tangent Identity | Level 5 | |
| 1902. Acute Angles Cosine | Level 2 | |
| 1903. Triangle Tan Calculation | Level 3 | |
| 1904. Function Range Determination 1 | Level 3 | |
| 1905. Radical Cosine Equation | Level 5 | |
| 1906. Cosine Degree Floor | Level 4 | |
| 1907. Cosecant of Negative Angle | Level 1 | |
| 1908. Arctan Equation Solutions | Level 3 | |
| 1909. Cotangent of 90 Degrees | Level 1 | |
| 1910. Matrix Determinant Calculation 2 | Level 3 | |
| 1911. Line Parameterizations Validity | Level 4 | |
| 1912. Trigonometric Equation Solutions 5 | Level 5 |