Mathematics · Real Analysis
Which of the following is an uncountable set?
- 1B = {(x, y) : x, y ∈ ℝ}✓
- 2ℕ × ℕ × ℕ, where ℕ is the set of natural numbers
- 3The set of all rational numbers ℚ
- 4A = {x ∈ ℝ : sin(xπ) = 0}
Correct answer
B = {(x, y) : x, y ∈ ℝ}
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