Last Update: 16 March 2009
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Reminder: Each HW problem solution should consist of:
All exercises are from §2.1 (sets).
For each set S above, is 3 ∈ S?
If the answer is "no", say why.
For each set S above, is {3} ∈ S?
If the answer is "no", say why.
For each set S above, is {3} ⊆ S?
If the answer is "no", say why.
Determine whether the following propositions are true or false.
If a proposition is false, say why.
Find 2 sets S, T such that (S ∈ T) ^ (S ⊆ T)
(note: more than one answer is possible).
For each set S below, what is |S|?
Let A = {a,b}; B = {1,2,3}; C = {i,j}. Compute the following Cartesian products:
Total points = 90.
A 86 - 90 A- 81 - 85 B+ 76 - 80 B 71 - 75 B- 66 - 70 C+ 61 - 65 C 51 - 60 C- 41 - 50 D+ 31 - 40 D 16 - 30 F 0 - 15
DUE AT BEGINNING OF LECTURE, THIS FRIDAY, MARCH 20!! |