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Class 12 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsIf \(n(A)=20\), \(n(B)=25\), and \(A\cap B=\varnothing\), how many elements belong to exactly one set?Class 12SetsLevel 10Easy MathematicsIf n(A ∪ B) = 81, the number of elements only in A is 29, and the number only in B is 34, what is n(A ∩ B)?Class 12SetsLevel 15Easy MathematicsIn a survey of 50 people, 28 use a mobile, 20 use a computer, and 10 use both. How many people use neither device?Class 12SetsLevel 10Easy MathematicsAccording to De Morgan’s law, what is (A∪B)′ equal to?Class 12SetsLevel 14Easy MathematicsIf A = {a, b, c} and B = {c, d, e}, what is A ∪ B?Class 12SetsLevel 11Easy MathematicsIf \(n(A-B)=7\) and \(n(A\cap B)=3\), what is \(n(A)\)?Class 12SetsLevel 11Easy MathematicsIf A = {p, q, r}, how many elements of P(A) must contain p?Class 12SetsLevel 10Medium MathematicsIf A = {∅, {∅}, {{∅}}}, what is |𝒫(A)|?Class 12SetsLevel 10Hard MathematicsIf P(A)⊆P(U), which statement is definitely true?Class 12SetsLevel 10Hard MathematicsIf A ⊆ B ⊆ U, which statement is always true?Class 12SetsLevel 10Medium MathematicsIf \(U=\mathbb{N}\) and \(A=\{x:x\in\mathbb{N},\ x\le 100\}\), what is \(A'\)?Class 12SetsLevel 8Medium MathematicsIf A has 3 elements, how many ordered pairs (X,Y) are there such that X⊆Y⊆A?Class 12SetsLevel 10Hard MathematicsIf A = {0, 2, 4, 6}, how many elements does P(A) have?Class 12SetsLevel 10Easy MathematicsIf {7} ∈ P(A), which statement is definitely true?Class 12SetsLevel 10Medium MathematicsIf A = {5}, what is P(A)?Class 12SetsLevel 10Easy MathematicsWhat is the correct meaning of a universal set?Class 12SetsLevel 10Easy MathematicsIf A has 4 elements, how many elements does its power set P(A) have?Class 12SetsLevel 9Easy MathematicsIf \(\{2,a\}=\{5,2\}\), what is the value of \(a\)?Class 12SetsLevel 9Easy MathematicsIf \(A=\{1,2\}\), which is \(\mathcal{P}(A)\)?Class 12SetsLevel 8Easy MathematicsIf A = {1, 2, 3}, how many subsets of A have at least two elements?Class 12SetsLevel 7Medium