Compare the given fractions and replace '$\boxed{\phantom{653}}$' by an appropriate sign '< or >':

(i) $\dfrac{3}{6} \boxed{\phantom{653}} \dfrac{5}{6}$

(ii) $\dfrac{2}{7} \boxed{\phantom{653}} \dfrac{2}{5}$

(iii) $\dfrac{3}{5} \boxed{\phantom{653}} \dfrac{4}{5}$

(iv) $\dfrac{4}{7} \boxed{\phantom{653}} \dfrac{4}{9}$

Replace '$\boxed{\phantom{653}}$' by an appropriate sign '< , = or >' between the given fractions:

(i) $\dfrac{1}{2} \boxed{\phantom{653}} \dfrac{1}{5}$

(ii) $\dfrac{2}{4} \boxed{\phantom{653}} \dfrac{3}{6}$

(iii) $\dfrac{7}{9} \boxed{\phantom{653}} \dfrac{3}{9}$

(iv) $\dfrac{3}{4} \boxed{\phantom{653}} \dfrac{2}{8}$

Fill in the boxes by the symbol < or > to make the given statements true:

(i) $\dfrac{5}{11} \boxed{\phantom{653}} \dfrac{3}{7}$

(ii) $\dfrac{8}{15}$ $\boxed{\phantom{653}}$ $\dfrac{3}{5}$

(iii) $\dfrac{11}{14}$ $\boxed{\phantom{653}}$ $\dfrac{29}{35}$

(iv) $\dfrac{13}{27}$ $\boxed{\phantom{653}}$ $\dfrac{15}{48}$

Arrange the given fractions in descending order:

(i) $\dfrac{5}{17}, \dfrac{4}{9}, \dfrac{7}{12}$

(ii) $\dfrac{7}{12}, \dfrac{11}{36}, \dfrac{37}{72}$