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Verified answer
K = {bil. bulat antara 2 dan 9}K = {3, 4, 5, 6, 7, 8}
Himpunan bagian dari K yang memiliki 2 anggota
= {3,4} , {3,5}, {3,6}, {3,7}, {3,8}, {4,5}, {4,6}, {4,7}, {4,8}, {5,6}, {5,7}, {5,8}, {6,7}, {6,8}, {7,8}
jawaban : B