Use of Video Lecture for Quantitative Aptitude
Quantitative Aptitude is the most requisite for clearing any competitive exam.Quant skills form the bulk of most of the competitive examinations.As àn aptitude test represents a systematic way to judge the candidate’s mental capability to perform certain tasks and react to different scenarios Quantitative Aptitude is standout amongst the most significant segments of any focused test.Data interpretation is the main fundamental bit of this part .It is a time consuming paper so one needs to have a good strategy of time management. Onlineaptitudetesthave become part of various examinations over the past few years. Prepare all kinds of aptitude test with us and maximise.You get access to numerous aptitude questions covering areas like Numerical ability, Reasoning ability, Verbal ability, visual andSpatialability.
The topics to focus on while preparing for the quantitative aptitude paper are –
* Simplification &approximation,
* Percentage ratio & proportion,
* Partnership, average & ages,
* Profit, loss &discount,
* Simple and compound interest,
* Time and work, speed, distance and time,
* Pipes & cisterns, mixture & allegation,
* Boats, stream, data sufficiency,
* Data interpretation (bar, line, pie, mix, arithmetic, case let),
* Permutations &combination,
* Probability & mensuration (2D&3D).
Some of the most common ways you can master to solve Quantitative aptitude question fast:
1: Use the given option to solve – In lot of
quantitative aptitude questions ,you can analyse the option given &
easily eliminate theones which can not be justified with the
question.Here is an example for you. Que. Ages of A and B are in the ratio 7:4, after 5 years, the ratio becomes 11:7. What is the age of A?
Options: A. 11, B. 18, C. 21, D. 28
Now, you know the age of A must be a multiple of 7, and you can quickly eliminate option A and B. Now pay attention to option C, if we take the age of A as 21, then after 5 years, A will be 26 years old. However, 26 is not a multiple of 11, and according to the question, A’s age after 5 years should be amultiple of 11. There you go, eliminate option C too. Now you’re only left with option D which is the answer. 28 is indeed a multiple of 7 and after 5years it would become 33, which happens to be a multiple of 11.
2. Don’t compute everything, use options to identify
If you are given a complex calculation to do, just think for a
second, there has to be a better way to do it. Because complex
calculations are not tested in an aptitude test, your smartness is.
Below is an example to for more clarity. Que: (381)^2 + (597)^2 = ?
Options: A. 456284, B. 658598, C. 765454, D. 501570
Now, to arrive at your answer, you can either manually calculate the squares or you can think in a smarter way. Square of 381 will definitely have the last digit of 1. (11)^2
; is 121, (21)^2
is 441, (31)^2
is 961, and so on. So, (381)^2 would be something like this xxxxx1. Similarly, square of 597 would be something like this, xxxxx9.( 7)^2 is 49, and the last digit is 9, so (597)^2 has to end with 9. Now that you have 2 numbers, xxxxx1 and xxxxx9, just add them like an old fashioned addition question.
xxxxx1
xxxxx9
______
xxxxx0
This way, you know the answer will end with 0, and now look at the options, your answer is D. Quantitative aptitude questions are a cakewalk if you’re equipped with skills like these, download qriyo home tuition app and get yourself a home tutor to develop your skills while you still have time.
3. Use effective percentage
The concept of effective percentage can help to reduce your calculation time dramatically.
You must have seen poster and banners outside shops offering 50% + 30% discount. The same kind of questions can be seen in most aptitude tests.
This offer means, first you will calculate 50% of the MRP, and then apply a 30% discount on the new value (it is not straight 80%). If a product is worth 100 rupees, then first apply 50% discount. You will arrive at 50 rupees, now apply 30% discount, and you will arrive at 35.
An alternate way of doing this is to use effective percentage.
a + b + ab/100 (a and b are the percentages)
= (-)50 + (-)30 + (-50)(- 30)/100
= -80 + 1500/100
= 65.
It
means, that 50% off + 30% off actually means flat 65% off on MRP. 65%
off on 100 is 35, which is the correct answer we arrived at earlier.
Now, I added a (-) sign at the beginning of percentages, because they are discounts, we are reducing the amount of 100, not increasing it. Had there been a question of compound interest where the amount gets increased, you would a (+) sign.
4. Learn basic percentages
If you want to calculate 10% of something, you would cut the zero at
the end, or put a decimal. This much is known by most people and they
don’t do (number x 10/100). But what to do when you want to calculate
25% of a number? Or 76% of a number? You must be equipped with basic
percentage
rules to solve these things quickly.
25% is nothing but 1/4th of a number.
75% would be 3/4th of a number.
- Just calculate 3/4th of your given number and you will arrive at 75%. Now, calculate 1% by either cutting 2 zeroes from the end of your number, or by putting a decimal before 2 places at the end. Once you have that 1%, add it to the 75% which you got.
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