Number System : Divisibility by 4
90 Days to CAT – A free short Course – Schedule \/ The basic rule for divisibility by 4 is that if the number formed by the last two digits in a number is...
Category: Number System
Number System : Divisibility by 3
90 Days to CAT – A free short Course – Schedule \/ Method 1 : Take any number Add together each digit in the number. Check if the sum is divisible by 3. If...
Number System : Divisibility by 2
90 Days to CAT – A free short Course – Schedule \/ Take any number and note the last digit in the number, discarding the other digits. Then take that digit while ignoring the...
Number System : How to find sum and number of even and odd factors of a Number
90 Days to CAT 2015 – Schedule How to find sum and number of even and odd factors of a Number Earlier in the article “How to find sum and number of factors of a...
Number System : How to find sum and number of factors of a Number
90 Days to CAT – Schedule \/ How to find sum and number of factors of a Number \/ You might have encountered with such questions in earlier CAT papers or any Test series....
[CSAT][CAT] Basic Numeracy – Percentages – Concept (Tips & Tricks) – 2
Regaining back from our last post : [CSAT][CAT] Basic Numeracy – Percentages (Tips & Tricks) – 1, now lets learn the basic concept behind the percentage and what actually percent is. Percent : A percent...
[CSAT][CAT] How to find maximum positive and negative roots of a polynomial
To find the maximum number of positive and negative real roots of a polynomial f(x), we should consider Descartes’ rule of signs. This rules does not tell the exact number of positive or negative roots....
How to find remainder – 2 : Fermat’s little theorem
So continuing discussion from our last post How to find remainder – 1 – Euler’s theorem, now we will discuss Fermat’s little theorem which can be easily used in questions where the divisor is...
How to find remainder – 1 – Euler’s theorem
To find the remainder when a number having a big power is divided by another number may seem to be a difficult, probably impossible, task but if you know certain sequential method to solve...
Graph Modification
Sometimes we come across questions related to graphs modification. These questions may look difficult in the first sight but are really easy to crack if we know some of the fundas. The questions may be...
