Mathematics
The Empty Set, Finite and Infinite Sets, Equal Sets
Practice questions
If A = {x ∈ ℕ : x² ≤ 49}, which set is A equal to?If A = {x ∈ ℤ : x is odd and x² = 16}, then what is A?What type of set is A = {x : x is a month having exactly 30 days}?If A = {x ∈ ℕ : x is less than 10} and B = {1, 2, 3, 4, 5, 6, 7, 8, 9}, which statement about A and B is correct?If A = {x ∈ ℝ : x² + 2x + 1 = 0}, which set is equal to A?Which statement is correct about A = {x ∈ ℤ : x ≥ -2}?If A = {x ∈ ℕ : x is a square number less than 50} and B = {1, 4, 9, 16, 25, 36, 49}, which statement is correct?What type of set is A = {x ∈ ℝ : x² ≥ 0}?If A = {x ∈ ℕ : x is divisible by 2 and x is odd}, what is A?If A = {x ∈ ℤ : x² = 25}, B = {5, −5}, and C = {−5, 5, 5}, which statement is correct?If A = {x ∈ ℝ : 1 < x < 2}, which statement is correct?If A = {x ∈ ℚ : x² = 2}, which statement about A is correct?For A = {x ∈ ℤ : x² ≤ 4} and B = {−2, −1, 0, 1, 2}, which statement is correct?If A = {x ∈ ℕ : x is a prime factor of 18} and B = {2, 3}, choose the correct statement.What is the set A = {x ∈ ℕ : x is a solution of x + 2 = x}?If A = {x ∈ ℤ : x is even and −5 < x < 5}, what is A?What is the correct statement for A = {x ∈ N : x is greater than every natural number}?If A = {x ∈ N : x is less than every natural number}, what is A?Which set is equal to A = {x ∈ ℤ : x³ = x}?If A = {x ∈ ℕ : x is a divisor of 36} and B = {1, 2, 3, 4, 6, 9, 12, 18, 36}, which option is correct about n(A) and A = B?