# Question

Use the formula of Theorem 2.7 to show that

In Theorem 2.7

P(A ∪ B) = P(A) + P(B) – P(An B)

(a) P(A ∩ B) ≤ P(A) + P(B);

(b) P(A ∩ B) ≥ P(A) + P(B) - 1.

In Theorem 2.7

P(A ∪ B) = P(A) + P(B) – P(An B)

(a) P(A ∩ B) ≤ P(A) + P(B);

(b) P(A ∩ B) ≥ P(A) + P(B) - 1.

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