- #1

chocolatelover

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## Homework Statement

Prove A intersects B=empty set if and only if B is a subset of (X/A)

## Homework Equations

## The Attempt at a Solution

Would I prove the contrapositive in this case?

If B is not a subset of (X/A), then the intersection of A at B is not the empty set

Could someone please show me what to do?

Thank you very much