Top 150+ Solved Discrete Structure (DS) MCQ Questions Answer
Q. Fact 1:All dogs like to run.Fact 2:Some dogs like to swim.Fact 3:Some dogs look like their masters.If the first three statements are facts, which of the following statements must also be a fact? I:All dogs who like to swim look like their masters. II:Dogs who like to swim also like to run.III:Dogs who like to run do not look like their masters.
a. I only
b. II only
c. III only
d. All
Q. Fact 1: Jessica has four childrenFact 2: Two of the children have blue eyes and two of the children have brown eyes.Fact 3: Half of the children are girls.If the first three statements are facts, which of the following statements must also be a fact?I: At least one girl has blue eyes. II: Two of the children are boys. III: The boys have brown eyes.
a. I only
b. II only
c. III only
d. All
Q. Fact 1: All drink mixes are beverages. Fact 2: All beverages are drinkable. Fact 3: Some beverages are red.If the first three statements are facts, which of the following statements must also be a fact?I: Some drink mixes are red.II: All beverages are drink mixes.III: All red drink mixes are drinkable.
a. I only
b. II only
c. III only
d. All
Q. Fact 1: All chickens are birds. Fact 2: Some chickens are hens. Fact 3: Female birds lay eggs.If the first three statements are facts, which of the following statements must also be a fact?I: All birds lay eggs.II: Some Hens are birds.III: Some chickens are not hens.
a. I only
b. II only
c. II and III only
d. All
Q. A theory of sets was firstly introduced by….
a. Tim berners lee
b. Franklin
c. G.Canter
d. c.panther
Q. the inventor of set defined set as
a. collection od distinct objects
b. collection of memebers
c. simple as collection of objects
d. simply as collection of alphabets
Q. class, groups , collection are synonyms of the term set.
a. TRUE
b. FALSE
c. both a and b
d. none
Q. If f (x) = cos x and g(x) = x3 , then (f o g) (x) is
a. (cos x)3
b. cos 3 x
c. X (cos x )3
d. cos x3
Q. If R is a relation “Less Than” from A = {1,2,3,4} to B ={1,3,5} then RoR-1 is
a. {(3,3), (3,4),(3,5)}
b. {(3,1), (5,1), (3,2),(5,2), (5,3), (5,4)}
c. {(3,3), (3,5), (5,3),(5,5)}
d. {(1,3), (1,5),(2,3), (2,5), (3,5),(4,5)}