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Mathematics-Online problems: | ||

## Solution to the problem of the (previous) week |

** Problem:**

Determine the number of the vertices by means of the Euler polyhedron formula.

**Answer:**

=

** Solution:**

- The surface of a soccer ball consists of black pentagons and white
hexagons. Two hexagons and one pentagon meet at each vertex:
- Each edge of a soccer ball connects two vertices and at each vertex three edges meet:
- Euler polyhedron formula:

[problem of the week]