Answer: (i) \(A'\cap B\). (ii) \(A\cap B\cap C\). (iii) \(A\cup B\).

In diagram (i), the shaded region is inside \(B\), but outside \(A\). Therefore it is

\(A'\cap B.\)

In diagram (ii), only the central overlap of all three sets is shaded. Therefore it is

\(A\cap B\cap C.\)

In diagram (iii), everything inside \(A\) or \(B\) is shaded. Therefore it is

\(A\cup B.\)