Fill in the blanks. (i) Zero has reciprocal. (ii) The numbers and are their own reciprocals (iii) The reciprocal of `(−5)` is. (iv) Reciprocal of `1 /x,` where `x != 0` is. (v) The product of two rational numbers is always a. (vi) The reciprocal of a positive rational number is.

Explanation

(i)Zero has `no` reciprocal.

(ii)The numbers `1` and `-1` are their own reciprocals.

(iii)The reciprocal of `(-5)` is `-1/5`.

(iv)Reciprocal of `1/x` where x≠0 is `x`.

(v)The product of two rational numbers is always a `rational `number.

(vi)The reciprocal of a positive rational number is always `positive`.