SSC GD 2018 Question Paper Hindi (21-Feb2019) (Shift 1)

The average age of $24$ students in a class is $15.5$ years. The age of their teacher is $28$ years more than the average of all twenty-five. What is the age of the teacher in years?

If $12$, $x$, $8$ and $14$ are in proportion, then what is the mean proportional between $(x-12)$ and $(x+4)$?

A circus tent is cylindrical to a height of $3\text{ m}$ and conical above it. If the radius of the base is $50\text{ m}$ and the slant height of the cone is $52\text{ m}$, then the total area of the canvas required to make it is:

The ratio of efficiencies of $A$ and $B$ for doing a certain work is $5:8$. Working together they can complete the work in $20$ days. $A$ alone will complete $25\%$ of that work in:

A sector is cut from a circle of diameter $42\text{ cm}$. If the angle of the sector is $150^{\circ }$, then what is its area in ${\text{cm}}^2$? (Take $\pi =\frac{22}{7}$)