Aptitude test tricks for placements

Know the test before you practise
Every company tests differently: some add coding, verbal or game-based rounds next to aptitude. Check how your target company hires on Hirastra, then practise only those sections. A week on the right sections beats a month on everything.
```
hirastra.com/companies
```
Memorise the fraction table
Percentage, profit-loss and data interpretation questions get much faster once these values are automatic. For two percentage changes in a row, use a + b + ab/100. Example: +20% then −10% = 20 − 10 − 2 = +8%.
```
1/6 = 16.67%   1/7 ≈ 14.28%
1/8 = 12.5%    1/9 ≈ 11.11%
1/11 ≈ 9.09%   1/12 = 8.33%
```
Speed and work in one line
To convert km/h to m/s, multiply by 5/18. A train crossing a pole takes its length divided by its speed. If A finishes a job in a days and B in b days, together they take ab/(a+b) days.
```
72 km/h × 5/18 = 20 m/s
A = 10 days, B = 15 days → 150 / 25 = 6 days
```
Use the two-pass method
First pass: solve only the questions you can finish in about 60–90 seconds and mark the rest. Second pass: return to the marked ones with the time you saved. Read the instructions first: if there is no negative marking, never leave a blank; if a section has its own timer, you cannot go back, so finish it before the timer ends.
Draw every reasoning puzzle
Draw a table for seating arrangements, a family tree for blood relations and Venn circles for syllogisms. Never solve them in your head. For reading comprehension, read the questions before the passage. Practise 20 timed questions every day and note every mistake with the shortcut that fixes it.
```
Daily: 20 timed questions
Note every mistake + the shortcut
```

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Know the test before you practise

Memorise the fraction table

Speed and work in one line

Use the two-pass method

Draw every reasoning puzzle