Arithmetic

They say Mathematics is a perfect Science. There is a debate over this among scientists but we can definitely say that Mathematical methods are not perfect so we cannot use them blindly. We could very well use a standard formula […]

Most of us are quite comfortable with the concepts of percentages, cost price and sale price, but when we come across a toughie from these topics, we feel lost. Then we go back to the theory but there seems to […]

We know we can use the deviation method to find the arithmetic mean of numbers. It is very useful in cases where the numbers are huge, as it considerably brings down the calculation time. The same method can be applied […]

We often tell you that if you are short on time, you can guess intelligently on a few questions and move on. Today we will discuss what we mean by “intelligent guessing”. There are many techniques – most of them […]

We all know that we need to be very careful while reading GMAT questions – that every word is important. Even small oversights can completely change an answer for you. This is what happens with many test takers who try […]

I am no fan of formulas, especially the un-intuitive ones but the one we are going to discuss today has proved quite useful. It is for a concept tested on GMAT Prep so it might be worth your while to […]

Let’s discuss a tricky little question today. It is best done using divisibility and remainders logic we discussed in our divisibility module. We are first going to see how to solve the question conceptually. The interesting thing is – what […]

I came across a question at the GMAT Club from an unknown source. Test takers have put up long, algebra based solutions to the problem. The question can be solved within 15 seconds if you understand the concepts discussed in […]

People often ask – how do we go from 48 to 51 in Quant? This question is very hard to answer since we don’t have a step by step plan – do theory from here – do questions from there […]

We know the usual questions in which we use weighted averages – two groups coming together, two solutions getting mixed etc but sometimes weighted averages come in very handy in unlikely Algebra questions. If you see an expression that looks […]