Answer
A∩ ∅ = {} = ∅
Work Step by Step
A∩∅
U = {1,2,3,4,5,6,7}
A = {1,3,5,7}
The set A∩ ∅ represents the elements which are common in both A and $\lt$ ∅
(∅ represent empty set).
Therefore the common elements of A and ∅ is an empty set.
Therefore A∩ ∅ = {} = ∅
