The angle of elevation of the top of two vertical towers as seen from the middle point of the line joining the foot of the towers are 60° and 30°, respectively. The ratio of the heights of the tower is

In the given figure if each of the outer circles have radii ‘R’, then the radius of the inner circle will be:

If the arithmetic mean of 6, 8, 10. x, 7 is 8.the value of x will be

Find the area of a white sheet required to prepare a cone with a height of 21cm and the radius of 20cm.

Direction (94-98): Study the following table to answer the given questions.
         Centre and Post-wise Numbered of candidate

In Chennai, the number of clerks is approximately how much percent more than that of officers?

Radha spends 40% of her salary on food, 20% on house rent, 10% on entertainment and 10% on conveyance. If her savings at the end of a month are ₹ 1500, then her salary per month (in ₹) is  

Find the mean proportional between 8 and 98. 

A shopkeeper gains 20 percent by giving a discount of 10 percent of the marked price of a toy. If he had given a discount of 20 percent, then what would be his profit percentage?