Evaluate

$\dfrac{4}{7} - \dfrac{-8}{9} - \dfrac{-13}{7} + \dfrac{17}{9}$

The number which on multiplying with $5\dfrac{2}{3}$ gives -$1\dfrac{2}{3}$ is:

1. $-\dfrac{5}{7}$

2. $\dfrac{5}{7}$

3. $-\dfrac{5}{17}$

4. $\dfrac{17}{5}$

The product of a positive rational number and its reciprocal is:

1. 0
2. -1
3. 1
4. none

The area of a rectangular paper is $7\dfrac{1}{3}$ cm². If its length $4\dfrac{2}{5}$cm, its breadth is:

1. $1\dfrac{3}{5}$cm

2. $1\dfrac{2}{3}$cm

3. $\dfrac{3}{5}$cm

4. $\dfrac{25}{60}$cm