# Aptitude Questions, Test Formulas and Tricks The articles in this section provide fast and easy methods to solve Aptitude Questions on LCM, HCF, Number System, Trains, Time and Speed, Boats and Streams, Mixtures and Alligations, Pipes and Cisterns, Cyclicity of numbers, Time and Work, Time and Distance, Average, Percentage and Ages. In each topic we had provided tips and tricks, math shortcuts and formulas with detailed explanation to solve Aptitude problems. Hope these articles will help you crack CAT, CPT, CSAT, XAT, MAT, GMAT, Bank PO Exams. To test your aptitude skills, fully solved mock online aptitude test is provided with each category for self assessment before appearing for Competitive exams and Campus Interview.

## Number System Tutorial II: Divisibility, Remainder, HCF & LCM

This a continuation of article on number system. Here we will discuss few of the important concepts like divisibility, remainders HCF and LCM. This would help us in solving questions which require you to find the remainder when a large number is divided by another. Also, we'll discuss some shortcuts to find the remainders when a number is divided by specific numbers, quickly, based on the pattern.

## Number System Tutorial Part III: Factors, Multiples, Unit Digit and Last Two Digits of Exponents

This is a continuation of article on number system. Here we will discuss few of the important concepts factors, multiples, applications of HCF and LCM in finding remainder, factorial etc. This will help you in solving aptitude problems related power, reminder etc very quickly. Also, we'll look at concepts and shortcuts in finding the unit digit (last digit) and last two digit of large exponent expression.

## Time & Distance Tutorial I: Basic Concepts, Average Speed & Variation of Parameters

Time and distance is one of the main sources for tricky quantitative questions in the well fame, well designed B-school entrance exams. An aspirant can expect 4 to 6 questions from this topic in CAT and CAT level exams. MAT and CMAT are playing a lot with this topic. For a better performance in this area, aspirants are required to acquire a certain level of awareness and skills which are mentioned below:

## Time and Distance Tutorial II: Relative Speed, Linear & Circular Races, Meeting Points

This is a continuation of tutorial on solving problems related to time and distance. In this chapter, we'll look at important concepts in time and distance related problems like relative speed, linear races, circular races and meeting points in circular race. This would help you to solve majority of time and distance related problems quickly using simple shortcuts and tricks.

## Time and Distance Tutorial III: Boats & Streams, Escalators, Journey with Stoppages

This is a continuation of article on tricks to solve questions related to time and distance in quantitative aptitude examinations. In this part of tutorial we’ll learn about some of the important concepts for solving problems related to boats and streams, escalators and journey with stoppage.

## Logarithm - Aptitude Questions, Rules, Formulas & Tricks

Most of the competitive entrance exams contain at least one question from the topic "Logarithms", but the aspirants are really scared of this topic. Their basic strategy on this area is simply skipping the question just because of the lack of confidence to approach the question due to the un-awareness. A basic understanding on the concept and rules of Logarithms help the aspirant to answer the direct as well as the indirect application type questions from this area.

## Probability - Aptitude Tricks, Formulas & Shortcuts

This is an important topic for all of those students appearing in competitive exams like Placement test, Bank PO, CAT, XAT, SNAP etc. because the questions from probability will test your counting skills such as permutation and combination too. Once you are really skilled in combinatorics (Basic counting methods, permutation and combination) you can easily solve the aptitude questions from this area by using common sense. In this article, we provide - basic terminologies of probability, important formulas, basic and advanced concepts, Baye's Theorem, probability aptitude question solving tricks.

## Permutations and Combinations - Tricks & important formulas

Permutation and Combination is one of the most important chapters for any competitive examinations like Placement Test, Bank PO, CAT, CMAT, XAT, SNAP, FMS, IIFT, MICA, GRE and GMAT. The questions from this topic are mainly checking the skill of an aspirant in logical counting. A thorough theoretical understanding about various counting techniques will help you to tackle all the aptitude questions from this area in an interesting way with the help of tricks & important formulas.

## Permutations and Combinations - Counting Techniques

This module is very important in regards of basic counting skills. An aspirant should learn this skill for the further effective applications of the concepts of Permutation and Combination. In this module we are not dealing with any kind of ever remembering formulae or equations. It is purely based on your logical counting skills. So whenever you are approaching such a problem, never go for any kind of per-defined equation or formulae, just think about the logical trick behind each question.

## Sequence and Series - Important concepts, Formulas & Tricks

Most of the logically puzzled questions asked from Sequences and Progressions. An aspirant's approach towards this topic should be more logical, at the same time he/she should highly aware about the formula and results. The aptitude questions on progressions will be direct type of progression format or any other type of sequences. This article explain in detail different types of sequence and series along with important concepts, formulas and tricks to solve the aptitude problems easily.