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Let A = {1, 2, {3, 4}, 5}. Which of the following statements is true?

{3, 4} ⊂ A
{3, 4} ∈ A
1 ⊂ A
{1, 2, 5} ∈ A

Correct Answer: {3, 4} ∈ A

Explanation:

NA

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