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Mathematics for IGCSE & O level - Sets (Section 2 - No. 29)
If A = {1, 2, 3, 4} and B = {3, 4, 5, 6}. What does A - B represents?
{1, 2}
{3, 4}
{1, 2, 3, 4, 5, 6}
{5, 6}
Paaiškinimas
A-B or A\B is all elements in A that are not in B
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