question_answer 10)

                Write: (i) The rational number that does not have a reciprocal. (ii) The rational numbers that are equal to their reciprocals. (iii) The rational number that is equal to its negative.

Answer:

                (i) The rational number '0' does not have a reciprocal. (ii) The rational numbers 1 and (?1) are equal to their reciprocals respectively. (iii) The rational number 0 is equal to its negative.