1
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Total number of elements in the power set of A containing 15 elements is

A
215
B
152
C
215$$-$$1
D
215 $$-$$ 1
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

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

A
6
B
3
C
9
D
12
3
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

A
1
B
2
C
0
D
9
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A graph G has m vertices of odd degree and ā€˜nā€™ 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
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