WBCS Mains 2020 Official Paper-VI

A boatman goes $2\text{km}$ against the current of the stream in $1\text{hour}$ and goes $1\text{km}$ along the current in $10\text{minutes}$. How long will it take to go $5\text{km}$ in stationary water?

Direction: Study the following alphabetical sequence and answer the question based on it.
$$\text{GAGHUTAAKHGAOYYDKKVRABICDDCRFFAHAHAIH}$$

If we write the letters of the above series in the reverse order, which letter is the middlemost?

What fraction of $\frac{4}{7}$ must be added to itself to make the sum $\frac{15}{14}$?

A man can row upstream at $8\text{kmph}$ and downstream at $13\text{kmph}$. The speed of the stream is:

Direction: Suppose the following words Man, Men, Machine, Method, Methodical, Make, Mentor, Map are arranged according to the dictionary rule. Which of them will be at the start?