Mathematics
Equal sets and Subsets
Practice questions
If A = {1, 2, 3, 4} and B = {2, 4}, why is B ⊆ A true?If A = {1, 2, 3}, which of the following statements is true?If A = {1, 2}, which statement is false?If A = {x : x is a positive divisor of 12} and B = {1, 2, 3, 4, 6, 12}, which statement is correct?If A = {2, 4, 8} and B = {x : x is a positive divisor of 8}, which statement is correct?If A = {x : x is a prime number less than 20} and B = {2, 3, 5, 7, 11, 13, 17, 19}, then is A = B?If A = {x : x is an odd natural number and x < 6} and B = {1, 3, 5}, choose the correct statement.If A = {2, 4, 6, 8} and B = {x : x is an even natural number and x < 10}, which statement is true?When are two sets called equal?Which statement gives the correct meaning of a proper subset?If A = {1, 2, 3, 4} and B = {3, 4, 5}, which statement is correct?If A = {x : x ∈ Z, −1 ≤ x ≤ 2} and B = {−1, 0, 1, 2}, which statement is correct?Let A be the set of distinct letters of the English word LEVEL and let B = {L, E, V}. Which statement is correct?Let A be the set of prime factors of 18 and B = {2, 3}. Which statement is correct?If A = {x : x is a positive divisor of 16 and x is even}, then which of the following sets is equal to A?If A = {x : x is a natural-number divisor of 15} and C = {1, 3, 5}, which relation is correct?If A ⊆ B, n(A) = 5, and n(B) = 5, which conclusion is correct?If A ⊂ B and n(B) = 7, which value is impossible for n(A)?If A = {2, 4, 6, 8, 10} and B = {4, 8}, which statement is correct?If A = {x : x ∈ N, 3 ≤ x < 7}, which of the following is a proper subset of A?