First slide

Operations on Sets

Question

If $A, B, C$ are three non-empty sets such
that $A \cap B = ϕ, B \cap C = ϕ,$ then

Moderate

A

$A = C$
B

$A \subset C$
C

$C \subset A$
D

none of these

Solution

Let $A = {1, 2, 3, 4, 5}, B = {6, 7, 8, 9}$ and $C = {11, 12, 13}$ which satisfy the given conditions but none
of (a), (b) or (c).

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