Topic · Interview, Career & Industry
← All topicsMental Math
20 articles · 3 checkpoints · 12 deeper reads · 5 reference notes
On the roadmap:Preparing for Fresher Quant Roles stage 1
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Interview arithmetic isn't a memory contest, it's a small set of restructuring moves applied under a ticking clock. Learn the moves, and the clock stops mattering.
You don't need a calculator to know what 8% for ten years does to your money, a single approximation, added instead of multiplied, gets you within a rounding error every time.
"How many piano tuners are there in Chicago?" isn't a trivia question, it's a test of whether you can break an impossible number into a chain of guessable ones.
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