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10. Evaluate the difference between two sets

If $A = \{-9, -8, 1, 4\}$ and $B = \{0, 1, 2, 4\}$ .

(i) $A - B$ $= \{i, i\}$ .

(ii) $B - A$ $= \{i, i\}$ .

(Note: Insert the answer in the given sequence order.)

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