The area of a triangle is 456 sq.cm and its height is 24 cm. The length of its base is

A boat takes half time in moving a certain distance downstream than upstream. what is the ratio between the rate in still water and the rate of current? 

Directions:  Study the bar-graph given below & answer the questions.
Pie-chart given below shows the percentage distribution of total no. of boys in six different Schools.
Total Boys in all schools together = 6400

If total no. of students in school F is 820. Then girls in school F is approximately what percent more/less than total boys in school B?

Directions : What will come in the place of the question mark (?) in the following number series?

1  2  6  15  31  ? 

The greatest fraction out of $$ {2\over 5},{5\over 6},{11\over 12},and \ {7\over8}$$ is

If a + b: b+c : c+a= 6:7:8 and a + b+c= 14, , then the value of c is : 

A number consists of two digits and the digit in the ten's place exceeds that in the unit's place by 5. If 5 times the sum of the digits be subtracted from the number, the digits of the number are reversed. Then the sum of the digits of the number is:

Study the following table carefully and answer the questions given below.

In which discipline was there a continuous increase in number of students over the given years?