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Let S be the set of all strings of O's and 1's of length 4, and let A and B be the following subsets of S: A = {0110, 0101, 1100, 0001} and B = {1011, 1110, 1010, 0001}. Find each of the following. (Enter your answers in set-roster notation.)

(a) AB
(b) AUB
(c) A - B
(d) B-A

User Chanikag
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Final answer:

The set operations between sets A and B involve finding the intersection (A ∩ B), union (A ∪ B), difference (A - B), and the difference (B - A), with each resulting set containing the respective elements based on those operations.

Step-by-step explanation:

The student is provided with sets A and B which are subsets of set S, the set of all strings of 0's and 1's of length 4. To find the following operations:A intersection B (A ∩ B): This is the set containing elements that are in both set A and B. Therefore, A ∩ B = {0001}.A union B (A ∪ B): This represents all elements that are in either set A or B, or in both. Hence, A ∪ B = {0110, 0101, 1100, 0001, 1011, 1110, 1010}.A minus B (A - B): This is the set of elements in A that are not in B. Thus, A - B = {0110, 0101, 1100}.B minus A (B - A): This set contains elements in B that are not in A. Therefore, B - A = {1011, 1110, 1010}.(a) The set AB contains all outcomes that lie in both sets A and B. In this case, 0001 is the only outcome that is in both sets A and B. Therefore, AB = {0001}.

(b) The set AUB contains all outcomes that lie in either of the sets A or B. In this case, the outcomes in sets A and B are {0110, 0101, 1100, 0001} and {1011, 1110, 1010, 0001} respectively. So AUB = {0110, 0101, 1100, 0001, 1011, 1110, 1010}.(c) The set A - B contains all outcomes that are in set A but not in set B. In this case, the outcome 0110 is in set A but not in set B. So A - B = {0110}.(d) The set B - A contains all outcomes that are in set B but not in set A. In this case, the outcomes {1011, 1110, 1010} are in set B but not in set A. So B - A = {1011, 1110, 1010}.

User Souradeep Nanda
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