The value of $\sqrt{19.36}+\sqrt{0.1936}+\sqrt{0.001936}$ $+\sqrt{0.00001936}$ is :

1980 is divided among A, B and C so that half of A’s part, one-third of B’s part and one-sixth of C’s part are equal. Then B’s part is

A godown is 15 m long and 12 m broad. The sum of the areas of the floor and the ceiling is equal to the sum of areas of the four walls. The volume (in m3) of the godown is:

If the square of the sum of two numbers is equal to 4 times of their product, then the ratio of these numbers is :

If $\operatorname{cosec} \theta-\cot \theta=\frac{7}{2}$, the value of $\operatorname{cosec} \theta$ is :

A shopkeeper marked the selling price of his goods in such a way that after giving a discount of 10% he gains 17%. How much per cent above the cost price is the marked price?

An article was sold at 16% gain. Had it been sold for 200 more, the gain would have been 20%. Then the cost price of the article is :

If $x=\frac{\sqrt{3}-\sqrt{2}}{\sqrt{3}+\sqrt{2}}$ and $y=\frac{\sqrt{3}+\sqrt{2}}{\sqrt{3}-\sqrt{2}}$, then the value of $x^{3}+y^{3}$ is :

The distance between the lines $y=m x+c_{1}$ and $y$ $=m x+c_{2}$ is

A man ordered 4 pairs of black socks and some pairs of brown socks. The price of a black socks is double that of a brown pair. While preparing the bill the clerk interchanged the number of black and brown pairs by mistake which increased the bill by 50%. The ratio of the number of black and brown pairs of socks in the original order was :