Explore topic-wise MCQs in Discrete Mathematics.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Discrete Mathematics knowledge and support exam preparation. Choose a topic below to get started.

1.

Let G be a finite group with two sub groups M & N such that |M|=56 and |N|=123. Determine the value of |M N|.

A. 1
B. 56
C. 14
D. 78
Answer» B. 56
Discussion
2.

Consider the binary operations on X, a*b = a+b+4, for a, b X. It satisfies the properties of _______

A. abelian group
B. semigroup
C. multiplicative group
D. isomorphic group
Answer» B. semigroup
Discussion
3.

B1: ({0, 1, 2 .(n-1)}, xm) where xn stands for multiplication-modulo-n and B2: ({0, 1, 2 .n}, xn) where xn stands for multiplication-modulo-m are the two statements. Both B1 and B2 are considered to be __________

A. groups
B. semigroups
C. subgroups
D. associative subgroup
Answer» C. subgroups
Discussion
4.

A relation (34 78) 57 = 57 (78 34) can have __________ property.

A. distributive
B. associative
C. commutative
D. closure
Answer» C. commutative
Discussion
5.

Let (A7, 7)=({1, 2, 3, 4, 5, 6}, 7) is a group. It has two sub groups X and Y. X={1, 3, 6}, Y={2, 3, 5}. What is the order of union of subgroups?

A. 65
B. 5
C. 32
D. 18
Answer» C. 32
Discussion