if the binary operation * on the set Z of integers is defined by a * b = a + b -5 , then write the identity element for the operation * in Z Share with your friends Share 4 Himanshu answered this Therefore, 5 is the identity element for the operation * in Z. 14 View Full Answer Kaushal Kishore Tiwari answered this Is it not 0 . -9 Ashok Kumar answered this i m sure it is 5because a*5 =a&5*a =a 4