On the set `Z` of integers, if the binary operation * is defined by `a*b=a+b+2` , then find the identity element.

If the binary operation * on the set Z is defined by a*b =a+b-5, then find the identity element with respect to *.

Let * be a binary operations on Z and is defined by , a * b = a + b + 1, a, bin Z . Find the identity element.

If the binary operation . on the set Z is defined by a.b =a+b-5, then find the identity element with respect to ..

On the set Q^+ of all positive rational numbers if the binary operation * is defined by a * b = 1/4ab for all a,b in Q^+ find the identity element in Q^+ .

If the binary operation * on the set Z is defined by a a^(*)b=a+b-5, then find the identity element with respect to *

Let * is a binary operation on Z defined as a * b = a + b - 5 find the identity element for * on z .

Let ** be a binary operation on the set Z of integers as a**b=a+b+1 . Then find the identity element:

For the binary operation * on Z defined by a*b= a+b+1 the identity element is

Let * be a binary operation o Q defined by a*b= (ab)/4 for all a,b in Q ,find identity element in Q

Let * be a binary operation on Zdefined by a*b=a+b- 15 for a,binZ . Find the identity element in (Z,*)