Question : Find the third proportional to 16 and 20.

Option 1: 25

Option 2: 23

Option 3: 24

Option 4: 26

Question : The ratio of the third proportional to 16 & 40 and the mean proportional between 10 & 40 is:

Option 1: 5 : 1

Option 2: 1 : 5

Option 3: 4 : 1

Option 4: 1 : 4

Question : Find the fourth proportional of 22, 66 and 11.

Option 1: 23

Option 2: 33

Option 3: 17

Option 4: 39

Question : Find the LCM of $\frac{3}{2}, \frac{81}{16}$ and $\frac{9}{8}$

Option 1: $\frac{91}{2}$

Option 2: $\frac{81}{2}$

Option 3: $\frac{111}{2}$

Option 4: $\frac{101}{2}$

Question : Find the value of the following expression.
$\frac{\left[\frac{5}{8}-\left\{\frac{3}{8}-\left(\frac{5}{8}-\frac{3}{8}\right)\right\}\right] \text { of } 8.8-1.2}{4 \frac{1}{6} \div 2.5 \times 2 \div \frac{1}{6} \text { of } 60+\left(\frac{3}{4}-\frac{3}{8}\right)}$

Option 1: $5 \frac{22}{43}$

Option 2: $3 \frac{23}{67}$

Option 3: $4 \frac{44}{85}$

Option 4: $4 \frac{4}{5}$