(19,18)→ ¬Z; 20

Toán BÁO CÁO TOÁN HỌC FANS AND BUNDLES IN THE GRAPH OF PAIRWISE SUMS AND PRODUCT POTX

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Đáp án tham khảo

18: (19,18)→ ¬z; 20: (12,20)→ ¬y; 20 : (20,19)→ ¬z; 36: (13,36) → ¬z;