Write the multiplicative inverse of :

(i) 9

(ii) -1

(iii) $\dfrac{11}{16}$

(iv) $5\dfrac{1}{4}$

(v) $\dfrac{-2}{3}$

(vi) $17\dfrac{3}{20}$

(vii) $–18\dfrac{1}{2}$

(viii) –5

(ix) $\dfrac{-20}{41}$

Represent each of the following on the number line :

(i) $\dfrac{3}{7}$

(ii) $\dfrac{16}{5}$

(iii) $-\dfrac{4}{9}$

(iv) $-\dfrac{18}{11}$

(v) $-3\dfrac{1}{6}$

Find two rational numbers between :

(i) 2 and 3

(ii) $\dfrac{1}{3} \text{ and } \dfrac{2}{5}$

(iii) $\dfrac{3}{4} \text{ and } 1\dfrac{1}{5}$

(iv) –2 and 1

Find three rational numbers between :

(i) 4 and 5

(ii) $\dfrac{1}{2} \text{ and }\dfrac{3}{5}$

(iii) –1 and 1

(iv) $2\dfrac{1}{3} \text{ and }3\dfrac{2}{3}$

(v) $-\dfrac{1}{2} \text{ and }\dfrac{1}{3}$

(vi) $-\dfrac{1}{3} \text{ and }\dfrac{1}{4}$