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Mathematics
Mathematics
Problem
10. Find sets
A
,
B
\mathrm{A}, \mathrm{B}
A
,
B
and C such that
A
∩
B
,
B
∩
C
\mathrm{A} \cap \mathrm{B}, \mathrm{B} \cap \mathrm{C}
A
∩
B
,
B
∩
C
and
A
∩
C
\mathrm{A} \cap \mathrm{C}
A
∩
C
are non-empty sets and
A
∩
B
∩
C
=
ϕ
\mathrm{A} \cap \mathrm{B} \cap \mathrm{C}=\phi
A
∩
B
∩
C
=
ϕ
.
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