WBCS Mains 2018 Official Paper-VI

In an examination, it is required to get $310$ marks of the aggregate marks to pass. A student gets $28\%$ marks and is declared failed by $93$ marks. What are the maximum aggregate marks a student can get?

What is the volume of the cube (in cubic $\text{cm}$) whose diagonal measures $4\sqrt{3}\text{cm}$?

How much time will it take for an amount of $\text{Rs. }450$ to yield $\text{Rs. }81$ as interest at $4.5\%$ per annum of simple interest?

The compound interest on $\text{Rs. }30000$ at $7\%$ per annum is $\text{Rs. }4347$. The time period (in years) is:

What is the difference between the compound interests on $\text{Rs. }5000$ for $1\frac{1}{2}$ years at $4\%$ per annum compounded yearly and half-yearly?