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Previous Year Question Paper

AI/AL/CD-401 (GS) – Introduction to Discrete Structure and Linear Algebra

June 2022AIMLSEMESTER-4
June 2022
Max Marks: 70
Duration: 3 Hours
Instructions:

Attempt any five questions.

All questions carry equal marks.

Q.1
Unit 1

List the 16 different relations on the set {0, 1}. How many of the 16 different relations on {0, 1} contain the pair (0, 1). Which of the 16 relations on {0, 1} are reflexive, symmetric and transitive.

Q.2
a)Unit 2

Show that the set S = {(1, 3, 5, 7), X₈} forms a group.

b)Unit 2

Prove that nPₙ(x) = xP'ₙ(x) - P'ₙ₋₁(x) using recurrence relation.

Q.3
a)Unit 3

Demonstrate that p∨(q∧r) and (p∨q)∧(p∨r) are logically equivalent. (Using Truth table)

b)Unit 3

Show that ∼(p∨(∼p∧q)) and (∼p∧∼q) are logically equivalent by developing series of logical equivalence.

Q.4
a)Unit 1

Draw the Hasse diagram for divisibility on the set {1, 2, 3, 4, 5, 6}

b)Unit 2

Define the terms: Abelian Group, Cyclic Group and Normal Sub group.

Q.5
a)Unit 3

Discuss various graph terminologies.

b)Unit 3

What is coloring problem and hence define coloring of graph?

Q.6
Unit 4

Solve the system by Cholesky decomposition. x + 2y + 3z = 5, 2x + 8y + 22z = 6, 3x + 22y + 82z = -10.

Q.7
Unit 4

Find the singular value decomposition of the matrix A = [[3, 1, 1], [-1, 3, 1]]

Q.8
Unit 5

Three samples, each of size 5, were drawn from three uncorrelated normal populations with equal variances. Test the hypothesis that the population means are equal at 5% Level. Sample 1 | 10 | 12 | 9 | 16 | 13 Sample 2 | 9 | 7 | 12 | 11 | 11 Sample 3 | 14 | 11 | 15 | 14 | 16