Kiran Expert Team Solutions for Chapter: SSC CHSL 10+2 Tier-I (CBE) Exam 23.03.2018 (Shift 1), Exercise 3: Quantitative Aptitude

What is the least number that should be added to the product of $7\times 8\times 9\times 10$ to make it a perfect square?

Working $9$ hours a day, Manish can read a book in $16$ days. How many hours a day should he work so as to finish the same work in $24$ days?

Two trains are running in opposite directions with the same speed. If the length of each train is $80$ metres and they cross each other in $16$ seconds, then what is the speed (in $km/hr$) of each train?

The perimeter and the breadth of a rectangle are $52 cm$ and $12 cm$ respectively. Find its area in $c{m}^2$.

Find the perimeter (in $cm$) of a semicircle of radius $7 cm$.

The curved surface area and the height of a right circular cylinder are $660 c{m}^2$ and $10 cm$ respectively. Find its diameter (in $cm$).

What is the value of $\left(\tan {30}^{\text{o}}+\frac{\sqrt{3}}{2}\right)$?

In $∆\mathrm{XYZ}$, the measure of angle $\mathrm{Y}$ is $90°$. If $\sec \mathrm{X}=\frac{17}{8}$, and $\mathrm{XY}=0.8 \mathrm{cm}$, what is the length (in $\mathrm{cm}$) of side $\mathrm{XZ}$ ?