CIE · IGCSE · Mathematics
One real Mathematics question.
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Topic: Sets: notation, Venn diagrams, union, intersection, complement, subsets. Pick an answer — get the mark scheme instantly.
Question · Difficulty 2/3
The universal set ξ = {x : x is an integer, 1 ≤ x ≤ 20}. Set A = {multiples of 3} and set B = {multiples of 4}. Which element is in A ∩ B?
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