(i) Reciprocal of 9 is \(\frac{1}{9}\)
(ii) Reciprocal of –7 is \(\frac{-1}{7}\)
(iii) Reciprocal of \(\frac{12}{5}\) is \(\frac{5}{12}\)
(iv) Reciprocal of \(\frac{-7}{9}\) is \(\frac{9}{-7}\)
(v) Reciprocal of \(\frac{-3}{-5}\) is \(\frac{5}{3}\)
(vi) \(\frac{2}{3}\times \frac{9}{4}\) = \(\frac{3}{2}\)
Reciprocal of \(\frac{3}{2}\) is \(\frac{2}{3}\)
(vii) \(\frac{-5}{8}\times \frac{16}{15}\) = \(\frac{-2}{3}\)
Reciprocal of \(\frac{-2}{3}\) is \(\frac{3}{-2}\)
(viii) \(-2\times \frac{-3}{5}\) = \(\frac{6}{5}\)
Reciprocal of \(\frac{6}{5}\) is \(\frac{5}{6}\)
(ix) Reciprocal of -1 is -1
(x) Reciprocal of \(\frac{0}{3}\) is not defined as in the form of \(\frac{p}{q}\) , q = 0, so it is not a rational number
(xi) Reciprocal of 1 is 1