Current Affairs Books 2012
Current affairs | general awareness | general knowledge section is as important as any other section in almost all government job competitive examinations. To improve our overall awareness there are lots of options like internet, newspapers, magazines, etc. However, there are very few options for exam specific preparation. The most striking part of this section is that there cannot be any prescribed format to prepare oneself for it. Fortunately, there are some wonderful books which can help you to sail through these competitive examinations. I am listing the most trusted books on current affairs and general awareness below.
Manorama Yearbook 2012 (Free CD) – This best seller has a long history of success. It is India's best General knowledge update covering almost everything that a student needs in competitive examinations – Purchase Online
Mathematics of Insurance
This is a guest post by Izzy Woods
Life Is A Gamble: Mathematics Of Expected Value And Insurance Explained
It’s always interesting when someone makes the claim that they don’t gamble. Even this early in the year most people will have made several decisions where the outcome was uncertain and those outcomes were mostly financial - just like a bet. Whether it was deciding to start the year with a new job or take out some kit car insurance on the newly built love of their lives they can’t be sure whether their financial position will be stronger or weaker as a result of their decision.
We’ll first explore the simple mathematics behind these gambles using a gambling example and explain why some decisions you should take each and every time they are offered to you. Interestingly products like insurance rely on our fear of ruin and are not always a fair gamble; we’ll explain why that is and how that leads to profit for insurance companies.
Rule of 72 – Estimation of Compound Interest and Time
Effect of Compounding
The Rule of 72 is a good quick math shortcut to find out the following –
- Time required for an amount to double itself, at a given rate of interest
- Rate at which an amount should grow to double itself in given time
This formula can be applied for “Doubling Problems” related to money, population, etc. which grows at an annual compounded rate.
Formulae
- To calculate the time; T = 72/R
- To calculate the rate of interest; R= 72/T
Fun with Algebra
This is a guest post by Danielle Brooksis, a regular contributor on QuickerMaths.com. If you want to write a guest post, get in touch at vineetpatawari[at]gmail[dot]com.
Algebraic Equations for Fun!
There was a lot of positive feedback about the alphametic cryptatrithms, I posted a few months ago: so here is a little game that is based on the same idea, but with a different execution. This version is fun for those with a propensity towards algebra, and geared more toward middle school or high-school ages; however, if you are an adult, please enjoy them as well. There are a few less steps here than in the cryptarithms, but I’m sure y’all will get a kick out of them all the same!
- (DD)^E = DEED
Memory Tricks for Trigonometry
In the post titled Trigonometry Formula Memorization Trick, I agreed to write about a simple memory trick for memorizing the value of all major angles of different trigonometry ratios like sin30, cos45, tan60, etc. So here you go –
Values of Trigonometric Angles
Let’s start with most commonly used angles of Sin. The angles are 0°, 30° (π/6), 45° (π/4), 60° (π/3), 90° (π/2). For these angles we’ve to make fractions for which we’ve to write 0, 1, 2, 3 and 4 in the numerators and write 4 in the denominator of each fraction.
Trigonometry Formula Memorization Trick
I learned this shortcut memory trick from my Maths teacher in school. Recently while interacting with a class X student, I realized they have to mug up all the trigonometric ratios. This can be frustrating and can create a phobia or dislike for an interesting subject like Trigonometry at the very onset.
To use this memory trick, you need to memorize this simple mnemonic -
Some people have curly brown hair turned permanently black
That’s all you need to memorize to register the trigonometrical ratios in your mind forever. So here you go,
Taking the Headache Out of Word Problems
This is a guest post by Danielle
For many math students, word problems are a cause for anxiety and stress. After all, how can you solve a math problem that is written in words, with few numbers to rely on? In my college trigonometry class, I was guilty of this, feeling like an imbecile as I struggled over the most basic of problems. However, what many don’t realize is that all of the numbers you need are contained in the puzzle; you simply have to know how to recognize and implement those numbers in order to find your solution.
The best way to do this is to draw a sketch of the scenario laid out in the puzzle—in essence to illustrate the story being told—in order to solve the problem. Below are three story problems and a step-by-step guide for finding their solutions:
Quantitative Ability Question
This quantitative ability question was sent to me by Mr. Satish Kumar by mail. I generally answer the questions I get on email by directly replying to them. However, I thought this question is worth to be discussed with all QM readers. So here it goes -
Question
I have a total of rs 1000. Item A costs rs 110,item B costs rs 90, item C costs rs 70 ,item D costs rs 40 and item E costs rs 45. For every item D that i purchase, I must also buy only 2 items of B. For every item A, I must buy one item of C. For every item E, I must also buy 2 of item D and one of item B. For every item purchased I earn 1000 points and for every rupee not spent I earn a penalty of 1500 points. My objective is to maximise the points I earn. What is the number of items that I purchase to maximise my points?
options....
a) 13 b)14 c)15 d)16
"Give me the procedure to solve this with in 2-3 mins . It takes to much time 2 solve this for me." - Satish Kumar
Pay attention to Satish's problem and suggest time reduction techniques along with the solution to the above problem.
I would latter include the best answer(s), posted as comment, in the post itself.
How to Manage Stress During Exams?
Stress management is a big challenge in our day to day life. The academic system and the pedagogy is such, that it appears very early in our life cycle. The first thing which will come to our mind after hearing about exam is tension or stress.
Through this article I would like to share certain ideas, which I gathered over the time, to reduce stress and increase efficiency during examinations. The underlying ideas can also be applied to manage stress in other aspects of our life. I hope it will be beneficial for all the readers of QM, either directly or indirectly. The intention of writing this article is to help readers willing to increase their efficiency and perform better, by making the exam process less tiring and little more enjoyable.
How to Manage Stress before Examination?
- Take a piece of paper and list down the main reasons of your stress and anxiety. Next to each problem, write possible solutions. Take a break and discuss with your parents and (if possible) your teachers your fears and doubts
Funny Maths Jokes
Maths is Fun
Mathematics can be real fun but that's only probable if you like the logic, the numbers and the beauty of the subject. However, with this post I have tried to make maths fun even for people who don't love maths. This is done by making fun of maths and mathematicians. Of course, these are not my creation and have been collected from different sources. I hope you would like these jokes on mathematicians.
Maths Jokes
Q: Why do you rarely find mathematicians spending time at the beach?
A: Because they have sine and cosine to get a tan and don't need the sun
Who is behind QuickerMaths?
I am Vineet Patawari - PGDM (IIM Indore), ACA, B.Com(H). My passion for Mathematics, specially Vedic Maths encouraged me to start QuickerMaths
I believe that if trained properly using powerful tools like Vedic Maths, the immense intellect of human mind can be ignited instantly - find out more
Get Maths Tricks by Email
Recent Comments
watchman was paid for awaking not for sleeping so that he can see dreams.. – 05Feb12
as a night watchman he shouldnt have slept at night to get that dream... – 04Feb12
Can u plz give me clarity in ur solution Kaush sir..... – 04Feb12
thanks for these tricks. Are these from the book "quicker maths by m.tyra" ? – 03Feb12
Most Popular
- 100% Finding Cube Root – Vedic Maths Way
- 67% Shortcut to Find Square of a Number
- 58% Shortcut Method for Multiplication
- 56% Shortcut to find the Cube of a number
- 53% Squaring any 2-digit number
- 49% Divisibility Rule of 7, 13, 17, 19, 23, 29, 31, 37, 41, 43 and 47
- 45% Herons Method of Finding Roots
- 45% Division in Vedic Mathematics
- 42% You can make a difference
- 41% Quicker Maths by M Tyra
- 40% Quick calculations for extremely large numbers
- 40% Divisibility Rules for 7 , 11 and 13
- 37% How to convert from decimal to other number systems
- 36% Quick Multiplication up to 20 x 20
- 36% Logical Reasoning Books