[" 3.Find the identity element for the binary operation "],[" set "Q" of the rational numbers,by "a*b=(ab)/(4).quad (S-17)]

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

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

Is the binary operation ** defined on the set of rational numbers by the rule a**b=ab//4 associative ?

Let * be a binary operation on the set Q of rational numbers as follows : a*b = (ab)/4 find is it commutative.

If * is a binary operation on set Q of rational numbers defined as a ^(*)b=(ab)/(5) Write the identity for ^(*), if any

Let * is binary operation on set Q of rational number defined as a**b=(ab)/(2) . Write the identity for *, if any.

If * is binary operation on set Q of rational numbers defined as a**b=(ab)/(5) . Write the identity for *, if any.

Find the identity element in set Q^(+) of all positive rational numbers for the operation * defined by a^(*)b=(ab)/(2) for all a,b in Q^(+)

Let ∗ be a binary operation on the set Q of rational numbers as follows: a*b=(ab)^2 find is it commutative?