Aptitude and Reasoning Questions

What is the effective discount (in %) on two successive discounts of 20% and 10%?

In a certain code language, '-' represents 'x', '÷' represents '+', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

10 x 4 ÷ 5 - 80 + 16 = ?

If Sinx = 4/5, then Secx/Sinx = ?

The area and the breadth of a rectangle are 288 sq.cm and 16 cm respectively. Find the length of its perimeter (in cm).

Select the option that represents the number of triangles in the given figure

The pie chart shows the investments made by 7 partners in a business. Study the diagram and answer the following questions.

What is the total investment (in Rs lakhs) in the business?

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statement to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statements:
(I) All birds are trees.
(II) Some trees are hens.

Conclusion:
(I) Some birds are hens.
(II) Some hens are trees.

Two circles touch each other at point X. Two common tangents of the circles meet at point P and none of the tangents passes through X. These tangents touch the larger circle at points B and C. If the radius of the larger circle is 15 cm and CP = 20 cm, then what is the radius (in cm) of the smaller circle?