The article focuses on certain tricks to help find whether the given number is divisible by certain numbers. Say to check whether the number is divisible by 13 or 17 etc. Here only the tricks for prime numbers less than 30 are given, or it will be confusing. The following tricks will surely get handy once you master it. So here are the tricks one by one.

Divisibility by 7:
Subtract “2″ times the digit in the unit place from the remaining number.Repeat the process till you find a familiar number, which …

Comparison Of Fractions:
Fractions is an important area where most people have problems, and this is a portion which is very much necessary in Quatitative Ability and Data Interpretation area of most competitive exams, like CAT,XAT,SNAP,MAT etc.So Lets discuss a few methods of identifying the largest or smallest fractions from a given set of fractions.
CASE-1: When numerators are same & denominators are different,The fraction with the largest denominator is the smallest, and the fraction with smallest denominator is the largest.
CASE-2: Different Numerator & Same Denominator, the fraction with largest numerator is …

Numbers & Multiplication
                   Experts say numbers are very vast.From a CAT, XAT, MAT, or from any competative exam point of view numbers is got prime importance.When we talk about numbers the very basic things that we need to know are 4 operations “addition,subtraction,division,multiplication“.Of these the last one is bit time consuming compared to first two.So lets think of steps to reduce time in multiplication .

Finding SQUARES with ease
 I have mentioned a few tips in the same topic before,but here are a few more tricks.First of all certain things you need …

I have posted some speed maths posts before,here are a few more tips and tricks.These are the things i forgot to mention in the other post,these few things are very simple and basic but they will help you gain some time in your quatitative sections.
1.Squares upto 25.
2.Cubes upto 12.
3.Powers of 2 upto 10.
4.Powers of 3 upto 6.
5.Multiplication tables upto 20.
6.Reciprocals of integers upto 12.
Making all these through will surely help you.All these should be in both ways like,when we see 529 in a question 23 should come to our mind …

Set your stop watch and check how much time you take to do these multiplications.
397 x 11 =
8598 x 11 =
59784 x 11 =
287986 x 11 =
8894357 x 11 =
157 x 12 =
2189 x 12 =
45876 x 12 =
914785 x 12 =
8237694 x 12 =
Now make a note of your time,and Read This
Check your time again with these figures and see the difference