GATE2009 q1 Revision as of 11:38, 15 July 2014 by Arjun Suresh (talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Which one of the following in NOT necessarily a property of a Group?

(A) Commutativity

(B) Associativity

(C) Existence of inverse for every element

(D) Existence of identity

Solution by Happy Mittal

By definition, in a group, commutativity is not necessary. So option (A) is correct.

Tweet