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) for all a , b in Q - (0) is

Find the idenity and inverse if any for the binary operation ** on Q-{0} defined by a**b=(ab)/4, a, b in Q-{0}

Find the identity and invertible elements in Z of the binary operation * defined as a * b = a + b-4, AA a, b in Z .

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

Let '*' be the binary operation defined on Q by the rule a * b = ab^2 for a , b in Q. compute (1*2) *3.

If the binary operation * defined on Q, is defined as a*b=2a+b-ab, for all a*bQ, find the value of 3*4

Let R be the set of real numbers and * be the binary operation defined on R as a*b= a+ b-ab AA a, b in R .Then, the identity element with respect to the binary operation * is

Let '*' be the binary operation defined on Q by the rule a * b = (ab)/(4) for all a , b in Q . Is the operaiton * associative?