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A = {a,b,c}
A = {a,b,d}
A = {a,b,e}
A = {a,c,d}
A = {a,c,e}
A = {a,d,e,}
A = {b,c,d}
A = {b,c,e}
A = {b,d,e}
A = {c,d,e}
= 10
jadi jawabannya c. 10
14. H = {2,4,5}
K = {1,4,7}
L = {1,5,7,}
jika, (H-L) U L maka, ({2,4,5} - {1,4,7}) = {2,5} U {1,5,7} = {1,2,5,7}
jadi, jawabannya b. {2,5,7,1,}
jadiin yg terbaik ya :D