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Refer to the relation R on the set {1,2,3,4,5) defined by the rule (x, y) = R if 3 divides x - y


1. List the elements of R


2. List the elements of R-1


3. Find the domain of R


4. Find the range of R


5. Find the domain of R-1


6. Find the range of R-1


Give examples of relations on {1,2,3,4} having the properties specified in the following:


10. Reflexive, antisymmetric, and not transitive


9. Not reflexive, not symmetric, and transitive


8. Reflexive, not symmetric, and not transitive


7. Reflexive, symmetric, and not transitive


Q#1 For any sets 𝐴, 𝐡 and 𝐢, if 𝐴 βŠ† 𝐡, then 𝐴 ∩ 𝐢 βŠ† 𝐡 ∩ 𝐢.

Q#2 For any sets 𝐴, 𝐡 and 𝐢,

(𝐴 Γ— 𝐢) ∩ (𝐡 Γ— 𝐷) = (𝐴 ∩ 𝐡) Γ— (𝐢 ∩ 𝐷).

Q#3 Given sets 𝐴, 𝐡 and 𝐢, prove that

𝐴 Γ— (𝐡 ∩ 𝐢) = (𝐴 Γ— 𝐡) ∩ (𝐴 Γ— 𝐢)

Q#4 Prove that If 𝐴 and 𝐡 are sets, then 𝒫(𝐴)⋃𝒫(𝐡) βŠ† 𝒫(𝐴⋃𝐡).

Q#5 Suppose 𝐴 and 𝐡 are sets.

If 𝒫(𝐴) βŠ† 𝒫(𝐡),π‘‘β„Žπ‘’π‘› 𝐴 βŠ† 𝐡.


1. Find the theta notation of the following:

a. 6n Β³+ 12n Β² + 1, for nÃ Βƒ Βƒ Β’ Β‰ Β₯1

b. 3n Β²+ 2n log2 n, for nÃ Βƒ Βƒ Β’ Β‰ Β₯1

2. Find the theta notation for the number of times the statement x:=x + 1 is executed.

a. for i:=1 to 2n do x=x+1

b. for i;=1 to 2n do for i;=1 to n do X:=x +1

1. Write the multi-sets of prime factors of given numbers.

a. 150

b. 450

c. 1250

2. Find the cardinalities of each multiset in parts 2-1.

3. Present the application offset and multiset in software engineering? Give specific programming example



Find out reflexive, symmetric and transitive closure of following relation R.Β 

R = {(1,2), (2,3), (3,3)}


Question#1

Use algebra of sets to prove the following:

i. (𝐡 βˆ’ 𝐴) βˆͺ (𝐢 βˆ’ 𝐴) = (𝐡 βˆͺ 𝐢) βˆ’ 𝐴

ii. [(𝐡 βˆ’ 𝐴) c∩ 𝐴] βˆ’ 𝐴c= 𝐴

iii. (𝐴𝑐 βˆͺ 𝐡)c ∩ Ac= βˆ…


Question#2

Use Mathematical induction to prove the following generalization of one

of De Morgan’s law: ⋃nj=1 𝐴j= ⋃nj=1 Aj

Question#3

Prove that (𝐴 βˆͺ 𝐡 βˆͺ 𝐢) β€² = 𝐴′ ∩ 𝐡 β€² ∩ 𝐢 β€²



In a group of computer engineering students, some like algebra and others do not like algrebra. There is no student in this group who is indifferent or has no opinion. Two students are randomly selected from this group.
(a) How many outcomes are possible? List all the possible outcomes.
(b) Consider the following events. List all the outcomes included in each of these events. Mention whether each of these events is a simple or a compound event.
(i) Both students like algebra.
(ii) At most one student likes algebra.
(iii) At least one student likes algebra.
(iv)Neither student likes algebra.

(4) Construct a difference table to predict the next term of each sequence.


(a) 9, 4, 3, 12, 37, 84, ...


(b) 10, 10, 12, 16, 22, 30, ..


Consider the setsAandB,whereA={3,|B|}andB={1,|A|,|B|}.Whatare the sets?



Let A={n∈N:20≀n<50} and B={n∈N:10<n≀30}. Suppose C is a set such that CβŠ†A and CβŠ†B. What is the

largest possible cardinality of C?



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