Which one of the following gives the members of the set A1 n B n C?
Attached Figure / Diagram
A
Φ
B
{s}
C
{t, u}
D
{y, z}
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
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
Source: Myschool Past Questions Archive (Record #47587)