The next two terms of the A.P., $\sqrt{3}, \sqrt{12}, \sqrt{27}, ……$ are :

1. 9 and $9\sqrt{3}$

2. $6\sqrt{3} \text{ and } 7\sqrt{3}$

3. $\sqrt{48}\text{ and } \sqrt{75}$

4. $\sqrt{75}\text{ and } \sqrt{108}$

On dividing x³ + 4x² + 5x + 6 by x, the remainder is :

1. 16

2. 6

3. -5

4. 5

For the quadratic equation ax² + bx + c = 0, we have b² > 4ac, then the roots of the equation are :

1. equal

2. 0 each

3. real and unequal

4. real and equal

The point P(m, n) is first reflected in x-axis to point P' and then point P' is reflected in y-axis to point P". Then the single transformation that reflects point P to P" is :

1. reflection in x-axis

2. reflection in y-axis

3. reflection in origin

4. invariant