Solution: Definitons over Venn

1. \( P(A\given B) = \frac{y}{y + z}\)
2. \( P(A\given \neg B) = \frac{x}{x+t} \)
3. \( P(A\cap \neg B) = \frac{x}{x+y+z+t}\)
4. \( P(B\given A\cap B) = 1 \)
5. \( P(A\cup B) = \frac{x+y+z}{x+y+z+t} \)

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