McKinsey & Company Any formulas I should know for McKinsey & Company case interviews? Perhaps, NPV, ROI etc?

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The only formula you need is to be as structured as possible in your responses. That is, approach every problem with a MECE framework. “I would consider these three points”, and say them succinctly. Hierarchical responses are better than laundry lists of points. Eg 1a,1b,1c,2a,2b,3a, and 3b as opposed to points 1-7.

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You’ll probably want to at least understand the concept of “Payback Period” and how to calculate it (especially when comparing alternatives).

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Definitely payback period

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Rule of 72

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In general, if you’re smart and structured, that’s enough.

You won’t get rejected for saying “what’s the formula for this?” Once you get to the actual computing.

We hire MDs and PHDs with 0 business knowledge.

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You won't need any formulas beyond the basics of profitability and simple payback. No way you're calculating NPV by hand during the interview.

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