JAMB - Mathematics (2018 - No. 55)
Which one of the following gives the members of the set A1 n B n C?
Φ
{s}
{t, u}
{y, z}
Explanation
A1 = Elements in the universal set but not in A = {s, w, x, y, z}
B = {r, s. t, u}
C = {t, u, v, w, x}
A1 n B n C = elements common to the three sets = none = empty set = Φ
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