## Thinking Mathematically (6th Edition)

RECALL: Equivalent sets are sets with the same number of elements. The roster method equivalent of the given sets are: $A=\left\{\text{Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}\right\}$ $B=\left\{2, 4, 6, 8, 10, 12, 14\right\}$ Both sets have 7 elements. Thus, they are equivalent sets. The given statement is true.