Accuracy really matters

Accuracy is very important to improve your overall score and thereby bring about an increase in your percentile as well.

Let me explain you with an example.

In a paper having 75 Questions with 25 in each section; 4marks for a correct answer and -1 for a wrong one; an individual will not be attempting all the 25 in each section (unless of course he is specially gifted).

So assuming that you attempt 15 questions in each sections(This brings down your attempt to 60 marks in a section).

You will be scoring a total of 60 only when your accuracy is 100%.

If you fare with an accuracy of 80% your score will end up at45(-3 for wrong ones and 48 for the correct)

But if you accuracy slumps below 60% you will not be able to score above 30 and probably will miss out on the cut-off's.

So, effectively, its not only the attempts that matter but also the accuracy.

Concept 1: Square of ...5

As far as finding the square of any number ending with 5 is concerned there is a short-cut trick with which we can always find the square without putting much of an effort.

There is a mathematical relation between the digits of the square and the actual number. For finding out the square of the given number ending with 5, we first split the given number into 2 parts separating out the least significant digit (which always is 5) from the rest of the number and discarding it. In other words we simply remove the 5 at the end of the number.

For example if the given number is 45 we consider only 4 or if the given number is 125 we consider only 12.

Now we multiply the number so obtained by its succeeding number. In mathematical terms if the number obtained is ‘n’ we perform an operation and get the result x=n. (n+1)

We take this resultant number and attach a 25 at the end of it.

Hence the square of 45 will be equal to 4*5=2025 and that of 125 can be given as 12*13=15625.

You can check this trick out for any number ending with a 5 and you will always get an accurate result.

An Introduction

This Blogspot is dedicated to all those who want to Bell The elusive CAT and get into the prestigious institutes of India.

I would love to share as many concepts as i have and also put as many good Questions and caselets that i come across. Any suggestions from your side are cordially welcomed.

Hope you find this site helpful in your persuit for the CAT.