AMTH140_ExamSols_201011
Past Exam & Solutions (NOTE: solutions not checked/confirmed/proofread... so may have errors).
3 Exchange Credit
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AMTH140 - Discrete Math
Exam Solutions: Nov (Semester 2) 2010
Page 1
Nov (Semester 2) 2010
Answer 1
[5 marks]
Let A = {3n + 2|n = 1, 2, 3, 4, 5, 6}, and B = {8, 11, 15} then
(i) A = {5, 8, 11, 14, 17, 20}, A B = {5, 8, 11, 14, 15, 17, 20}, A B = {8, 11}, A B (orA B ) = {5, 14, 17, 20}.
(ii) Power set of B = { , {8}, {11}, {15}, {8, 11}, {8, 15}, {11, 15}, {8, 11, 15}}
(iii) (A × B ) = {(5, 8), (5, 11), (5, 15), (8, 8), (8, 11), (8, 15), (11, 8), (11, 11), (11, 15),
.
(14, 8), (14, 11...
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