Profit & Loss Shortcut
When discount and profit are both given, convert CP:MP before finding markup.
Spot the pair: discount is on marked price, profit is on cost price.
Example Question: By what percentage should a shopkeeper mark his goods above the cost price so that even after allowing a discount of 30%, he makes a profit of 20%?
Grammar Trap
When a non-living thing has an apostrophe 's, it is usually an error.
In spoken English, we often say things like 'the car's wheels' or 'the table's legs'. Because it sounds natural, exam setters use it to hide grammatical errors.
Economics
Planning history is part of India’s larger borrowed-constitutional-and-policy vocabulary.
Borrowed-feature GK becomes reliable when every country is attached to its own feature family.
Example Question: The concept of Five-Year Plans in India is borrowed from which country?