3² + 2³ is equal to :

1. 15
2. 16
3. 17
4. 18

(7 - 5)⁵ is equal to :

1. 6
2. 8
3. 16
4. 32

$\Big(\dfrac{-3}{5}\Big)^5$ is equal to :

1. $\dfrac{-243}{3125}$

2. $\dfrac{-81}{625}$

3. $\dfrac{81}{625}$

4. $\dfrac{512}{1875}$

The value of x such that $\Big(\dfrac{3}{7}\Big)^3 \times \Big(\dfrac{3}{7}\Big)^{-8} = \Big(\dfrac{3}{7}\Big)^{2x + 3}$ is

1. -4
2. -2
3. 0
4. 1