Let `Q^(+)` be the set of all positive rational numbers   (i) show theat the operation * on
Channel: Doubtnut
Date: 2020-04-19

Let `Q^(+)` be the set of all positive rational numbers   (i) show theat the operation * on `Q^(+)` defined by a* b =`1/2`(a+b) is binary operation   (ii) show that * is commutative   (iii) show that * is not associative