The fourth vertex of a parallelogram ABCD, where A = (3, -2), B = (7, 6) and C = (3, 8) is :

1. D = (1, 0)

2. D = (-1, 0)

3. D = (0, 1)

4. D = (0, -1)

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