Group-Theory

Question 1
A
A
B
B
C
C
D
D
E
engineering-mathematicsGroup-TheoryGATE-2024-CS1(Forenoon)
Question 2
If (G,.) is a group such that (ab)^-1 = a-1 b-1 , ∀ a,b ∈ G is a/an
A
Commutative semi group
B
Abelian group
C
Non-abelian group
D
None of these
Engineering-MathematicsGroup-TheoryISRO-2016Video-Explanation
Question 2 Explanation: 
Question 3
Let ({a,b},*) be a semigroup, where a*a=b.
(A) a*b=b*a
(B) b*b=b
Choose the most appropriate answer from the options given below:
A
Only true
B
Only true
C
Both (A) and (B) true
D
Neither (A) nor (B) true
Engineering-MathematicsGroup-TheoryNTA-UGC-NET 2021 Dec & 2022 June Paper-2
There are 3 questions to complete.

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