Discrete Maths - Sets

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26. If (G, .) is a group such that a² = e, ∀ a ∈ G, then G is

Answer
Comment
Array

Option : B
Explanation :

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27. The inverse of - i in the multiplicative group,{1, - 1,i,- i } is

Answer
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Array

Option : C
Explanation :

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28. The set of integers Z with the binary operation "1" defined as a*b =a +b+1 for a, b ∈ Z, is a group. The identity element of this group is

Answer
Comment
Array

Option : C
Explanation :

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29. In the group (G, .), the value of (a^-1 b)^-1 is

Answer
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Array

Option : B
Explanation :

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30. The identity element in the group given below with respect to matrix multiplication is

A
B
C
D

Answer
Comment
Array

Option : C
Explanation :

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