1

COMEDK 2020

MCQ (Single Correct Answer)

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In the group $$(G\,{ \otimes _{15}})$$, where $$G = \{ 3,6,9,12\} $$, $${ \otimes _{15}}$$ is multiplication modulo 15, the identity element is

2

COMEDK 2020

MCQ (Single Correct Answer)

+1

-0

A group (G *) has 10 elements. The minimum number of elements of G, which are their own inverses is

3

COMEDK 2020

MCQ (Single Correct Answer)

+1

-0

A graph G has m vertices of odd degree and ‘n’ vertices of even degree. Then which of the following statements is necessarily true?

4

COMEDK 2020

MCQ (Single Correct Answer)

+1

-0

Which of the following is not a group with respect to the given operation?

Questions Asked from Sets and Relations (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

COMEDK Subjects

Physics

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Optics

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Modern Physics

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Physical Chemistry

Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry

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Mathematics

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Calculus