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Brain teaser / market sizing

Hi

I'd like to know the approach into calculating market sizing/brain teaser question that has no correlation to population. I find it hard to find formulas for these types of questions, for instance: how many pigs are there in China?

Thanks

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Vlad
Coach
am 22. Juni 2019
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School

Hi,

Why don't you calculate the meat consumption in China from the population and then get the number of pigs from that?

Best

am 3. Jan. 2023
But doesnt that assume all pigs are consumed?
am 22. Juni 2019

The way i see it, I would always consider the population. Lets assume you have 1 billion of inhabitants and that 5 % have a pig. Plus i would still consider that each household has 4 people, so we're not couting the same "pig" a few times... The same reasoning would apply to "how many cats are there in France?"
I hope it helps!

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Clara
Coach
am 27. Juli 2023
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut

Hello!

Precisely for the high amount of questions (1) asked by my coachees and students and (2) present in this Q&A, I created the “Economic and Financial concepts for MBB interviews”, recently published in PrepLounge’s shop (https://www.preplounge.com/en/shop/prep-guide/economic_and_financial_concepts_for_mbb_interviews).

After +5 years of candidate coaching and university teaching, and after having seen hundreds of cases, I realized that the economic-related knowledge needed to master case interviews is not much, and not complex. However, you need to know where to focus! Hence, I created the guide that I wish I could have had, summarizing the most important economic and financial concepts needed to solve consulting cases, combining key concepts theorical reviews and a hands-on methodology with examples and ad-hoc practice cases.

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  • Economic concepts: Profitability equation, Break even, Valuation methods (economic, market and asset), Payback period, NPV and IRR, + 3 practice cases to put it all together in a practical way. 
  • Financial concepts: Balance sheet, Income statement/P&L and Performance ratios (based on sales and based on investment), +1 practice case
  • Market structure & pricing: Market types, Perfect competition markets (demand and supply), Willingness to pay, Pricing approaches, Market segmentation and Price elasticity of demand, +1 practice case
  • Marketing and Customer Acquisition: Sales funnel, Key marketing metrics (CAC and CLV) and Churn, +1 practice case

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