Two numbers are in the ratio 7 : 9. If the sum of the numbers is 288, then the smaller number is

1. 126
2. 162
3. 112
4. 144

The ratio of number of edges of a cube to the number of its faces is

1. 2 : 1
2. 1 : 2
3. 3 : 8
4. 8 : 3

The fourth proportional to 3, 4, 5 is

1. 6

2. $\dfrac{20}{3}$

3. $\dfrac{15}{4}$

4. $\dfrac{12}{5}$

The third proportional to $6\dfrac{1}{4}$ and 5 is

1. 4

2. $7\dfrac{1}{2}$

3. 3

4. none of these