Common math formulas

math quantitative
New answer on May 11, 2021
4 Answers
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Anonymous A asked on May 10, 2021

Hi! Do you have a list of common math formulas used in case interviews? I had a case recently where fair value was asked and I was just o_O. Hope you can help a mathematically-impaired person out!

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Ian
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replied on May 10, 2021
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Antonello
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replied on May 10, 2021
McKinsey | MBA professor for consulting interviews
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Francesco
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updated an answer on May 11, 2021
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Hi there,

The most common formulas you need to know in a consulting interview are:

  • Breakeven
  • Rule of 72
  • Perpetuity formula and general NPV formula
  • ROI and related financial ratios

Besides that, you should be familiar with simple and compound interests.

Best,

Francesco

(edited)

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Clara
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replied on May 11, 2021
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut

Hello!

Totally agree with the ones written below.

Furthermore, in a very 80-20 approach, in 95% of the times it´s not going to be more complicated than a break even or an NPV.

Hope it helps!

Cheers,

Clara

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Ian gave the best answer

Ian

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