# Sets Operations

Let $$A$$, $$B$$ and $$C$$ be any three sets such that $$A-B=C$$; then which of the following statement(s) is/are correct?

1. $$A$$ is the union of $$B$$ and $$C$$
2. $$C$$ is always a proper subset of $$A$$
3. $$C$$ is the compliment of $$B$$

ANSWER FORMATE: Enter the sum of the serial numbers as answer. For example, if all three statements are correct then the answer is: $$1+2+3=6$$.

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