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Cardinality

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

MathematicsWhich option is correct about E₂ = {x : x is a month name}?Class 10SetsSets and their representationsLevel 1Easy MathematicsHow many elements are in B₂ = {x ∈ ℤ : x is a positive factor of 15}?Class 10SetsSets and their representationsLevel 1Easy MathematicsIf V = {x ∈ ℤ : -2 ≤ x < 3}, what is n(V)?Class 10SetsSets and their representationsLevel 1Easy MathematicsHow many elements are in the set R = {∅}?Class 10SetsSets and their representationsLevel 1Easy MathematicsIf M = {x ∈ ℕ : x ≤ 50 and x is a multiple of 10}, how many elements are in M?Class 10SetsSets and their representationsLevel 1Easy MathematicsHow many elements are in the set J = {x ∈ ℤ : x² < 4}?Class 10SetsSets and their representationsLevel 1Medium MathematicsIf H = {1, 2, 2, 3, 3, 3}, how many distinct elements are actually in the set H?Class 10SetsSets and their representationsLevel 1Easy MathematicsIf C = {x : x ∈ ℤ, −3 < x ≤ 2}, how many elements does C have?Class 10SetsSets and their representationsLevel 3Medium MathematicsHow many elements are in O₁ = {x : x is a distinct letter occurring in the word mathematics}?Class 10SetsSets and their representationsLevel 2Easy MathematicsHow many elements are there in T = {x : x ∈ Z, x² ≤ 4}?Class 10SetsSets and their representationsLevel 1Easy