1
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?

A
$$m+n$$ is an even number
B
$$m+n$$ is an odd number
C
$$m+1$$ is an odd number
D
$$n+1$$ is an even number
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

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

A
The set of odd integers under addition.
B
The set of even integers under addition.
C
{1, $$-$$1} under multiplication.
D
{0} under addition.
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