(12,20)→ ¬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

20: (12,20)→ ¬z; 20: (20,19)→ ¬y; 48 : (19,48)→ ¬y; 26: (26,48) → ¬z;