WBCS 2021 Mains (General Studies Paper-IV) Prev. Yr. Paper (24-May-2022)

Two automobiles are $150$ kilometres apart and traveling towards each other. One automobile is moving at $60\text{km/h}$ and the other is moving at $40\text{km/h}$. In how many hours will they meet?

If each interior angle of a regular polygon is $144^{\circ }$, find the number of sides of the polygon:

Direction: Study the following sequence of letters, digits and symbols carefully:
$$8\cdot \text{F W }\$\text{ Y }56\text{G ? }71\text{E N \# P }3\text{@ J B }\Delta 4\text{M R }92+\text{ K}$$

The product of the number of digits and the number of symbols is:

The $\text{HCF}$ of two numbers is $4$ and $\text{LCM}$ is $520$. If one of the numbers is $52$, the other number is:

A farmer has some hens and some rabbits. If the total number of the feet of the hens and the rabbits is $160$ and their total number of heads is $50$, the number of hens the farmer has is: