The total invoice value of a toy, in intra-state transaction is ₹ 5,600. Rate of GST is 12%. Then SGST for this toy is :

1. ₹ 300

2. ₹ 600

3. ₹ Nil

4. ₹ 313.60

For any real value of k, the roots of the quadratic equation x² + kx - 9 = 0 are :

1. real and equal

2. imaginary

3. real and unequal

4. none of these

The mean proportion between $\dfrac{x - y}{x + y} \text{ and } \dfrac{x^2y^2}{x^2 - y^2}$ is :

1. $\dfrac{xy}{x + y}$

2. $\dfrac{xy}{x - y}$

3. $\dfrac{x - y}{xy}$

4. $\dfrac{x + y}{xy}$

In the given figure, BC = 16 cm, BD = 4 cm, then AB is equal to :

1. 5 cm

2. 8 cm

3. 6 cm

4. 4 cm