`Q^+` denote the set of all positive rational numbers. If the binary operation `o.` on `Q^+` is defined as a `o.b=(a b)/2,` then the inverse of 3 is `4/3` (b) 2 (c) `1/3` (d) `2/3`

Q^+ denote the set of all positive rational numbers. If the binary operation . on Q^+ is defined as a.b=(a b)/2, then the inverse of 3 is (a) 4/3 (b) 2 (c) 1/3 (d) 2/3

QQ^(+) denote the set of all positive raional numbers. If the binary operation @ on QQ^(+) is defined as a@b=(ab)/(2) , then the inverse of 3 is---

On the set Q^+ of all positive rational numbers a binary operation * is defined by a * b=(a b)/2 for all a ,\ b in Q^+ . The inverse of 8 is (a) 1/8 (b) 1/2 (c) 2 (d) 4

On the set Q^(+) of all positive rational numbers a binary operation * is defined by a*b=(ab)/(2) for all a,b in Q^(+). The inverse of 8 is (1)/(8) (b) (1)/(2)(cc)2(d)4

Q^+ is the set of all positive rational numbers with the binary operation * defined by a*b= (a b)/2 for all a ,\ b in Q^+ . The inverse of an element a in Q^+ is a (b) 1/a (c) 2/a (d) 4/a

On the set Q of all rational numbers if a binary operation * is defined by a*b=(ab)/(5), prove that * is associative on Q.

On the set Q of all rational numbers if a binary operation * is defined by a*b= (a b)/5 , prove that * is associative on Qdot

Q^(+) is the set of all positive rational numbers with the binary operation * defined by a*b=(ab)/(2) for all a,b in Q^(+). The inverse of an element a in Q^(+) is a (b) (1)/(a)( c) (2)/(a) (d) (4)/(a)

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^+ .

Let Q be the set of all rational numbers and * be the binary operation , defined by a * b=a+ab for all a, b in Q. then ,