Today I got an email from one of my reader
Sir how to find the correct solution in less than a minute, as the topper (***** banking institute) find the solution in 1 min. Please tell me any short trick. Thanks
Question: 87.5 x 32.4 x 4.1=? x 1.6 x 43.75
1) 42.5
2) 41.75
3) 18.4
4) 16.4
5) None of these
90*30*4 = 10800 (takes around 10 sec)
45*1.5 = 68 ( approx)
=10800/68
Sir how to find the correct solution in less than a minute, as the topper (***** banking institute) find the solution in 1 min. Please tell me any short trick. Thanks
Question: 87.5 x 32.4 x 4.1=? x 1.6 x 43.75
1) 42.5
2) 41.75
3) 18.4
4) 16.4
5) None of these
Solution
He is doing by elimination90*30*4 = 10800 (takes around 10 sec)
45*1.5 = 68 ( approx)
=10800/68
By taking approximation to solve quickly :-
= 1100/7 = 157
Answer is none of these
Answer is none of these
This may sound illogical to few readers but that's how we save time during exams. You will find at least 3-4 such questions, may or may not be from implications but from many other chapters such as Data Interpretation, which requires you to make quick calculations. It's almost impossible to solve every question with precision of two decision.
I have shared lots of tips in my Quantitative Aptitude book here
Download Simplification notes here
I have shared lots of tips in my Quantitative Aptitude book here
Download Simplification notes here
