Math Chapter Wise question with answer

Q01 The identify element in the set Z of integers under the binary operation * Defined by a b a b 1, ∗ = + + ∗ = + + ∗... English · Rajasthan TGT 2011 Q02 The set 5,15,25,35 under the binary operation of multiplication of residue classes modulo 40 is– English · UP PCS (Pre) 2003 Q03 The set of units is Z14 (under the usual operation modulo 14 addition and multiplication) is given by: English · JSSC PGT 2018 Q04 The set of non-zero complex numbers form a group under: English · OPSC PGT 2017 Q05 From following sets, the group under the indicated operations is English · PGT 2009 Q06 The set of all positive rational numbers G form an Abelian group under the operation defined by ∀ ∈ ab a*b =, a,b G... English · (GIC) Lecture Exam, 2015