Directions: The line graph shows the number of work visas issued by a country in each year from 2011 to 2016. Study the diagram and answer the following questions . 

Number of work visas issued were more than those issued in the previous years in how many years ? 

A right circular cone of largest volume is cut out from a solid wooden hemisphere. The remaining material is what percentage of the volume of the original hemisphere?

A trader sold two items at the same price. One at 20% profit and another at 10% loss. The overall profit / loss percentage of the trader is ________

A sum of ₹14,375, when invested at r% interest per year compounded annually, amounts to ₹16,767 after two years. What is the value of r?

Train A takes 1 hour more than train B to travel a distance of 720 km. Due to engine trouble speed of train B falls by one third, so it takes 3 hours more than Train A to complete the same journey. What is the speed of Train A (in km/hr)?

The lengths of the lengths placed on the sides of a point inside an equilateral triangle are 6 cm, 8 cm and 10 cm. What is the area of the triangle?

What is the area of the largest triangle that can be fitted into a rectangle of length 'l' units and width 'w' units?

The diagonal of a square is 14 cm. What will be the length of the diagonal of the square whose area is double of the area of first square?