by Shashank Prabhu | Oct 22, 2015 | Quant
Coordinate geometry is one of the rare topics from which problems appear in CAT. The questions are pretty simple and formula based but many a time, students do not know shortcuts and direct formulae that make their life a lot easier. One such concept is that of the...
by Shashank Prabhu | Oct 20, 2015 | Quant
In this article, we will be seeing how to calculate the number of paths along a grid. The previous article focused on calculating the number of squares and rectangles in an m*n grid. While simple grids can be easily solved using the permutations with repetition...
by Shashank Prabhu | Oct 19, 2015 | Quant
This is the first part of grids in which I will be covering number of squares and rectangles in an m*n grid. The next part will cover paths along a grid. This is an easy sub-topic from permutations and combinations and can be solved within seconds by application of...
by Prasad Sawant | Oct 16, 2015 | Quant
In the last article on Simple and Compound Interest, we looked at the basic concepts of simple interest and compound interest. We will continue this topic and understand the concept of installments. What’s an installment? It is a sum of money due as one of several...
by Shashank Prabhu | Oct 13, 2015 | Quant
Derangement is a concept in which, the questions essentially consist of de-arranging items i.e. if there is a particular relation between two objects, it has to be avoided while forming the arrangements. The questions are easy to pick and require only a couple of...
by Sriram Krishnan | Oct 13, 2015 | Quant
We will look at finding the maxima/minima using the AM-GM inequality in this article. This is part of the article series we are doing in the run up to CAT 2015. Here are the other articles in this series: 75 Days to CAT. Concept If we have 2 numbers ‘a’ and ‘b’, the...
