Mathematics, 23.03.2020 20:03 crummar01

D = {x | x is a whole number} E = {x | x is a perfect square < 36} F = {x | x is an even number between 20 and 30} The expression D ∪ E = E. F ⊂ D (E ∩ F) is the empty set. E ∪ (D ∩ F) is {25}. Set E is infinite.

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D = {x | x is a whole number} E = {x | x is a perfect square < 36} F = {x | x is an even number b...