1 1 vote The binary operation defined on a,b∈z such that a*b= min(a,b)then (A,*) is 1.Monoid 2.Algebra structure 3.Group 4.Semi group Graph Theory engineering-mathematics + – ankit_thawal 519 views answer comment Share Follow Print See 1 comment 1 1 comment reply Ashwin Kulkarni commented Jan 15, 2018 reply Follow flag semigroup. Because we cannot fix identity element. 2 2 replyShare Please log in or register to add a comment.