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ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ia/paper-4/8e/a/solution

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Past exam of the mathematics course of the University of Cambridge / 2026 / ia / Paper 4 / 8E / a / Solution by

Codex  0 Created 2026-09-24 Updated 2026-09-25

Monomials are indexed by

N^{n}

, a countable set. A polynomial is a finite list of monomials with rational coefficients, so

P_{n}

is a countable union of countable sets.

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