NTPC CBT-2 QUANT QUIZ

What is the area of a circle inscribed in a square of area $1764{\mathrm{cm}}^2$ ?

The average of 32 observations is 38 . If 7 is added to each observation what will be new mean-

Of the three numbers, the first is twice the second and is half of the third. If the average of these numbers is 56, the numbers in order are:

Numbers of boys and girls in a class are 130 and 156 respectively. Average Age of girls and boys are $14.5$ years and $13.4$ years respectively. The average age (in years) of all boys and girls is

If the price of a shirt is first decreased by $20\mathrm{\%}$ and then increased by $25\mathrm{\%}$ the net change in the price of the shirt will be :-

A sum of Rs. 725 amounts to Rs. 899 in 2 years. What will it amount to if the rate of interest is increased by 2% ?

$\mathrm{A}$ can do a piece of work in 10 days while $\mathrm{B}$ can do the same work in 12 days and $\mathrm{C}$ can do the same work in 15 days. In how many days together they can complete the work?

Water flows at a rate of 10 metres per minute from a cylindrical pipe $5\mathrm{mm}$ in diameter. How long will it take to fill up a conical vessel whose diameter at the base is $40\mathrm{cm}$ and depth is $24\mathrm{cm}?$

HCF of $\frac{12}{5},\frac{21}{6},\frac{9}{4}$ and $\frac{18}{3}$ is :