First slide

Operations on Sets

Question

If A = {1,2,3,4,5,6}, B = {1,2}, then $A - (A - B) =$

Moderate

A

A
B

$ϕ$
C

$A \cap B$
D

$A \cup B$

Solution

$A - B = \{3, 4, 5, 6\}, A - (A - B) = {1, 2}$

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