For an index set I and indexed families of sets {Ai | i ∈ I } and {Bi | i ∈ I }. For each of the following statements, either prove it or find a counterexample. (∩i∈I Ai ) ∪ (∩i∈I Bi ) = ∩i∈I (Ai ∪ Bi ) (∩i∈I Ai ) ∪ (∩i∈I Bi) ⊆ ∩i∈I (Ai ∪ Bi ) ∪i∈I (Ai ∩ Bi ) = (∪i∈I Ai ) ∩ (∪i∈I Bi )

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.CR: Chapter 12 Review
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For an index set I and indexed families of sets {Ai | i ∈ I } and {Bi | i ∈ I }. For each of the following statements, either prove it or find a counterexample.

  1. (∩i∈I Ai ) ∪ (∩i∈I Bi ) = ∩i∈I (Ai ∪ Bi )
  2. (∩i∈I Ai ) ∪ (∩i∈I Bi) ⊆ ∩i∈I (Ai ∪ Bi )
  3. ∪i∈I (Ai ∩ Bi ) = (∪i∈I Ai ) ∩ (∪i∈I Bi )
  4. ∪i∈I (Ai ∩ Bi ) ⊆ (∪i∈I Ai ) ∩ (∪i∈I Bi )
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