Define identity element for a binary operation defined on a set.

Write the identity element for the binary operation * defined on the set R of all real numbers by the rule a*b= (3a b)/7 for all a ,\ b in Rdot

Write the identity element for the binary operation * defined on the set R of all real numbers by the rule a*b=(3ab)/(7) for all a,b in R

Find the identify element for the binary operation *, defined on the set of Q of rational number, by a * b =(ab)/(4)

Find the identity element for the binary operation * on Z defined as a*b = a + b-5. Also find the inverse element of 100.

Find the identity element for the binary operation * on Z defined as a*b = a + b-5. Also find the inverse element of 100.

The identity element for the binary operation * defined on Q - (0) as a * b = (ab)/(2) for all a , b in Q - (0) is

The identity element for the binary operation ** defined on Q - {0} as a ** b=(ab)/(2), AA a, b in Q - {0} is

The identity element for the binary operation ** defined on Q ~ {0} as a**b = (ab)/2' AA a,b in Q - {0} is .........

Find the identity elements if any for the binary operations defined by a**b=a+b+1,a,b inZ .

Find the identity elements if any for the binary operations defined by a**b=a+b+ab,a,b inQ-{-1} .