Which of the following pairs of sets is equal?
A{4, 8, 12, 16} and {8, 4, 16, 18}
B{2, 4, 6, 8, 10} and {x : x is a positive even integer and x ≤ 10}
C{x : x is a multiple of 10} and {10, 15, 20, 25, 30, …}
D{a, b, c, d} and {d, c, b, a, e}
Answer & Solution
Correct answer: B. {2, 4, 6, 8, 10} and {x : x is a positive even integer and x ≤ 10}
Two sets are equal iff they have exactly the same elements (order/repetition immaterial). Only option C names the same six elements on both sides; the others differ by at least one element.
Related questions
The side opposite one acute angle of a right triangle is, for the other angle, the:Cosecant, secant and cotangent are described as the reciprocals of the:Tangent is the ratio of the opposite side to which side?Positive reference angles have terminal sides lying in which quadrant?A reference angle is the smallest positive acute angle formed with which axis?One radian is the central angle intercepting an arc equal in length to the:Cosine is the ratio of the hypotenuse and which side?How many coterminal angles does any angle have?