## Permutation and Combination

Permutation : It is the different arrangements of a given number of elements taken one by one, or some, or all at a time. For… Read More »

Permutation : It is the different arrangements of a given number of elements taken one by one, or some, or all at a time. For… Read More »

In Calendar, questions are mainly based on finding the day of the week if we are given a date. For example, we may be asked… Read More »

From this topic, usually, questions from heights and distances is asked. Sometimes, it has been observed that straight forward questions from trigonometric ratios such as… Read More »

Mensuration 3D deals with shapes like cube, cuboid, sphere etc. The problems are generally based on volume and surface area. Cuboid Let the length, breadth… Read More »

Mensuration 2D mainly deals with problems on perimeter and area. The shape is two dimensional, such as triangle, square, rectangle, circle, parallelogram, etc. This topic… Read More »

Progressions (or Sequences and Series) are numbers arranged in a particular order such that they form a predictable order. By predictable order, we mean that… Read More »

The problems in Clocks usually deal with finding the angle between the hour hand and the minute hand, number of times the two hands coincide,… Read More »

The amount which is lent / deposited is called Principal The money that the principal generates is called Interest. This is the money generated as… Read More »

Profit and Loss is a topic that is definitely asked in every placement exam. While the questions are not too tricky, some require deeper understanding… Read More »

Problems on ages basically use formulae from Algebra and do not require any special formula. It is like a question type of algebra. Sample Problems… Read More »

Algebra questions basically involve modeling word problems into equations and then solving them. Some of the very basic formulae that come handy while solving algebra… Read More »

Mixture is a combination of two or more elements to form a third element. The questions from mixture are usually based on Ratio and Proportion… Read More »

Ratio and Proportion Ratio of two quantities ‘a’ and ‘b’ having same units is simply a / b and is usually written as a:b The… Read More »

Percentages is an important topic not only from QA point of view, but also because of its extensive use in Data Interpretation. Percentage means per… Read More »