# Question 18

**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.

(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.

**Solution:**

(i) Zero does not have a reciprocal

(ii) 1 and âˆ’ 1 are equal to their reciprocals.

(iii) Zero is equal to its negative.

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