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Podzbiory zbioru A: {Ф} - zbiór pusty, {0}, {1}
b) A={1}
Podzbiory zbioru A: {Ф}
c) A={x,y,z}
Podzbiory zbioru A: {Ф}, {x}, {y}, {z}, {x,y}, {x, z}, {y, z}
d) A={a,b,c,d}
Podzbiory zbioru A: {Ф}, {a}, {b}, {c}, {d}, {a, b}, {a, c}, {a, d}, {b, c}, {b, d}, {c, d}, {a, b, c}, {a, b, d}, {a, c, d}, {b, c, d}