Discrete Math Interview Preparation Guide Download PDF
Discrete Math based Frequently Asked Questions by expert members with experience in Discrete Math. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts
46 Discrete Math Questions and Answers:
1 :: A _______ is an ordered collection of objects.
a) Relation
b) Function
c) Set
d) Proposition
c) Set
2 :: The set O of odd positive integers less than 10 can be expressed by ___________ .
a) {1, 2, 3}
b) {1, 3, 5, 7, 9}
c) {1, 2, 5, 9}
d) {1, 5, 7, 9, 11}
b) {1, 3, 5, 7, 9}
3 :: What is Discrete Math?
Discrete mathematics is the study of mathematical structures that are fundamentally discrete rather than continuous.
4 :: What is the Cartesian product of A = {1, 2} and B = {a, b}?
a) {(1, a), (1, b), (2, a), (b, b)}
b) {(1, 1), (2, 2), (a, a), (b, b)}
c) {(1, a), (2, a), (1, b), (2, b)}
d) {(1, 1), (a, a), (2, a), (1, b)}
c) {(1, a), (2, a), (1, b), (2, b)}
6 :: The Cartesian Product B x A is equal to the Cartesian product A x B. Is it True or False?
a) True
b) False
b) False
Let A = {1, 2} and B = {a, b}. The Cartesian product A x B = {(1, a), (1, b), (2, a), (2, b)} and the Cartesian product B x A = {(a, 1), (a, 2), (b, 1), (b, 2)}. This is not equal to A x B.
Let A = {1, 2} and B = {a, b}. The Cartesian product A x B = {(1, a), (1, b), (2, a), (2, b)} and the Cartesian product B x A = {(a, 1), (a, 2), (b, 1), (b, 2)}. This is not equal to A x B.
7 :: What is the cardinality of the set of odd positive integers less than 10?
a) 10
b) 5
c) 3
d) 20
b) 5
8 :: Which of the following two sets are equal?
a) A = {1, 2} and B = {1}
b) A = {1, 2} and B = {1, 2, 3}
c) A = {1, 2, 3} and B = {2, 1, 3}
d) A = {1, 2, 4} and B = {1, 2, 3}
c) A = {1, 2, 3} and B = {2, 1, 3}
10 :: The members of the set S = {x | x is the square of an integer and x < 100} is _________________.
a) {0, 2, 4, 5, 9, 58, 49, 56, 99, 12}
b) {0, 1, 4, 9, 16, 25, 36, 49, 64, 81}
c) {1, 4, 9, 16, 25, 36, 64, 81, 85, 99}
d) {0, 1, 4, 9, 16, 25, 36, 49, 64, 121}
b) {0, 1, 4, 9, 16, 25, 36, 49, 64, 81}
12 :: The set of positive integers is _________ .
a) Infinite
b) Finite
c) Subset
d) Empty
a) Infinite
14 :: Which of the following function f: Z X Z → Z is not onto?
a) f(a, b) = a + b
b) f(a, b) = a
c) f(a, b) = |b|
d) f(a, b) = a - b
c) f(a, b) = |b|