DM - Lattice & Group -Q7

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(Q, *) is an algebraic structure where Q represents rational numbers and * denotes multiplication. Which one of the following statements is true?

(A).Q is an abelian group. 

(B).Q is a group but not abelian. 

(C).Q is a semigroup but not a monoid. 

(D).Q is monoid but not group.

asked 6 days ago in Discrete Maths by gbeditor (44,500 points)
reshown 3 days ago by gbeditor

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