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Class 10 · Mathematics
→If U = {x : x ∈ ℕ, x ≤ 48}, A = {x ∈ U : 4 divides x}, and B = {x ∈ U : 6 divides x}, what is n((A ∪ B)′)?
Class 10 · Mathematics
→If U = {1, 2, ..., 10} and A = {x : x ∈ U and x² − 11x + 30 = 0}, what is A' ∩ {5, 6, 7, 8}?
Class 10 · Mathematics
→If the universal set is U = ℝ, A = (−∞, 0] and B = [2, ∞), what is A′ ∩ B′?
Class 10 · Mathematics
→If U = {1, 2, ..., 36} and A is the set of multiples of 6, how many multiples of 12 are in A′?
Class 10 · Mathematics
→If U = {x : x ∈ ℤ, −10 ≤ x ≤ 10} and A = {x : x ∈ U and |x| ≤ 3}, what is n(A')?
Class 10 · Mathematics
→If U = {1, 2, ..., 20}, A = {x : x ∈ U and x ≤ 8}, and B = {x : x ∈ U and x ≥ 14}, what is (A ∪ B)′?
Class 10 · Mathematics
→Let A and B be two sets in a universal set U. Which of the following statements is always true?
Class 10 · Mathematics
→If A ⊆ U, what is A ∩ U′ equal to?
Class 10 · Mathematics
→If the universal set is U = {1, 2, ..., 30} and A = {x : x ∈ U and the last digit of x is 0 or 5}, what is n(A′)?
Class 10 · Mathematics
→If U = {a, b, c, d, e, g, h} and A = {a, e, h}, what is A′?
Class 10 · Mathematics
→If U = {1, 2, ..., 12} and A = {1, 2, 3, 4, 5}, what is A' union A?
Class 10 · Mathematics
→Let A and B be subsets of U with A union B = U. Which statement about A' is always true?
Class 10 · Mathematics
→If U = {1, 2, ..., 25} and A is the set of non-prime elements of U, what is A'?
Class 10 · Mathematics
→If U = R and A = {x in R : -1 < x <= 6}, what is A'?
Class 10 · Mathematics
→If U = {1, 2, ..., 8}, A = {1, 2, 5}, and B = {2, 4, 6}, what is A' ∪ B', where the complement is taken with respect to U?
Class 10 · Mathematics
→Let U = {x in N : x <= 60}, A = {multiples of 3 in U}, and B = {multiples of 4 in U}. What is n((A intersection B)')?
Class 10 · Mathematics
→If A is a subset of U, what is (U minus A)' equal to, where complements are taken with respect to U?
Class 10 · Mathematics
→Let U = {1, 2, 3, ..., 16} and A = {x in U : x is divisible by 4}. What is the complement A' with respect to U?
Class 10 · Mathematics
→Which statement is false for the complement of A?
Class 10 · Mathematics
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