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Class 10 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsIf U = {x : x ∈ ℤ, −12 ≤ x ≤ 12} and A = {x : x ∈ U, x² − 9x + 18 ≤ 0}, what is n(A′)?Class 10SetsComplement of a Set and Its PropertiesLevel 21Hard MathematicsIf U = {x : x ∈ ℕ, x ≤ 96}, A = {x : x ∈ U, 8 divides x}, and B = {x : x ∈ U, 12 divides x}, what is n(A′ ∩ B′)?Class 10SetsComplement of a Set and Its PropertiesLevel 21Hard MathematicsWhat is the correct conclusion about the roots of (x^2-(2a+1)x+a(a+1)=0)?Class 10Quadratic EquationsRoots of a Quadratic EquationLevel 31Hard MathematicsWhich statement is correct about the roots of x^2-2px+p^2-9=0?Class 10Quadratic EquationsRoots of a Quadratic EquationLevel 31Hard MathematicsWhich statement is always true for x^2-(a+4)x+4a=0?Class 10Quadratic EquationsRoots of a Quadratic EquationLevel 31Hard MathematicsIf α and β are the roots of x² − 6x + 5 = 0, which equation has roots 3α − 2 and 3β − 2?Class 10Quadratic EquationsRoots of a Quadratic EquationLevel 31Hard MathematicsIf U = {x : x ∈ ℕ, x ≤ 84}, A = {x : x ∈ U, 6 divides x}, and B = {x : x ∈ U, 14 divides x}, what is n(A′ ∩ B′)?Class 10SetsComplement of a Set and Its PropertiesLevel 20Hard MathematicsWhich of the following statements about the complements of two sets, relative to a universal set, is always true?Class 10SetsComplement of a Set and Its PropertiesLevel 20Medium MathematicsIf U = {1, 2, ..., 27} and A = {x : x ∈ U, 3 divides x}, how many elements divisible by 2 are in A′?Class 10SetsComplement of a Set and Its PropertiesLevel 21Hard MathematicsIf U = ℝ and A = {x ∈ ℝ : x ≠ −2 and x ≠ 5}, what is A′?Class 10SetsComplement of a Set and Its PropertiesLevel 20Medium MathematicsIf U = {1, 2, ..., 24}, A = {x ∈ U | 4 divides x}, and B = {x ∈ U | 8 divides x}, what is B′ ∩ A?Class 10SetsComplement of a Set and Its PropertiesLevel 10Medium MathematicsIf A⊆U, what is (A′∪A)′ equal to?Class 10SetsComplement of a Set and Its PropertiesLevel 10Easy MathematicsLet U = {x ∈ ℤ | 1 ≤ x ≤ 30} and A = {x ∈ U | x ≡ 1 (mod 4)}. What is n(A′), the number of elements in the complement of A with respect to U?Class 10SetsComplement of a Set and Its PropertiesLevel 10Medium MathematicsIf U={1,2,…,18} and A is the set of primes in U, which set of multiples of 3 lies in A′?Class 10SetsComplement of a Set and Its PropertiesLevel 10Medium MathematicsLet U = {1, 2, ..., 81} and A = {x ∈ U | x is a perfect square}. How many numbers divisible by 9 belong to A′?Class 10SetsComplement of a Set and Its PropertiesLevel 10Medium MathematicsIf U=R, A=[1,∞), and B=(−∞,4), what is A′∪B′?Class 10SetsComplement of a Set and Its PropertiesLevel 10Medium MathematicsIf the universal set U = {1, 2, 3, ..., 10}, A = {1, 2, 3}, and B = {3, 4, 5}, what is (A′ ∩ B)′, where complements are taken with respect to U?Class 10SetsComplement of a Set and Its PropertiesLevel 10Medium MathematicsFor a universal set U, if n(U)=200, n(A′)=76, n(B′)=89, and n(A′∩B′)=31, what is n((A∩B)′)?Class 10SetsComplement of a Set and Its PropertiesLevel 10Hard MathematicsLet U = {x ∈ ℤ | −4 ≤ x ≤ 6} and A = {x ∈ U | (x − 1)(x + 2) ≥ 0}. What is A′, the complement of A with respect to U?Class 10SetsComplement of a Set and Its PropertiesLevel 10Hard MathematicsIf U={1,2,…,14} and A={2,4,6,8,10,12,14}, how many ordered pairs are in A′×A?Class 10SetsComplement of a Set and Its PropertiesLevel 10Medium