Discrete Mathematics, Mathematics, Mathematics Education, Study Guide, Computer Science.
number 2 would have to be an element of the set whose elements are {1} and {2}. But 2 is not equal to either {1} or {2}, and so (e) is false. Cartesian Products Example 1.2.5 — Ordered Pairs a. Is (1, 2) = (2, 1)? b. Is (3, 5/10) = (√9 , 1/2) ? c. What is the first element of (1, 1)? solution: a.