Freeflows
All Problems
Prealgebra
Number
Theory
Counting and Probability
Precalculus
Geometry
Algebra
Intermediate Algebra
| Status | Title | Difficulty |
| 1881. Spherical to Rectangular Conversion | Level 3 | |
| 1882. Cosine Equation Solution | Level 2 | |
| 1883. Vectors Angle Cosine 1 | Level 5 | |
| 1884. Trigonometric Sum Simplification 2 | Level 3 | |
| 1885. Tetrahedron Volume Calculation | Level 4 | |
| 1886. Tangent Sum and Product | Level 3 | |
| 1887. Cosine Difference Calculation | Level 2 | |
| 1888. Vectors Angle Measurement | Level 2 | |
| 1889. Matrix Norm Difference | Level 5 | |
| 1890. Parabola Equation Determination 1 | Level 4 | |
| 1891. Trigonometric Product Equality | Level 4 | |
| 1892. Eigenvalue Vector Equation | Level 5 | |
| 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 |