The length of a chord which is at a distance of 12 cm from the center of a circle of radius 13 cm is 

Tom follows Jerry. In the same time Tom jumps 8 times and Jerry jumps 6 times. But the distance that Tom travels after jumping 7 times is equal to the distance that Jerry goes after jumping 5 times. What is the ratio of the speed of Tom and Jerry?

A dealer marks an article 40% above the cost price and sells it to a customer, allowing two successive discounts of 20% and 25% on the marked price. If he suffers a loss of Rs.140, then the cost price (in Rs.) of the article is:

The numerator of a fraction is 4 less than its denominator. If the numerator is decreased by 2 and the denominator is increased by 1, the denominator becomes eight times the numerator. Find the fraction? 

Directions: Each of the questions consists of a question followed by three statements. You have to study the questions and the statements and decide which of the statements(s) is/are necessary to answer the question. 

What is the speed of the train?
 I. The train crosses a signal pole in 13 sec.
 II. The train crosses a platform of length 250 m in 27 seconds.
 III. The train crosses another train running in the same direction in 32 seconds.

If tan $$ -{7π\over4}=x $$ then the value of x is : 

If a number is increased by 30 % and after that it is decreased by 25 % and again it is increased by 25 % then find average change in percentage? (approx.) 

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 the ratio boys to girls in School A and School B is 2 : 3 and 3 : 7 respectively. Then find the difference of total girls in school B and A?