Get Active in Our Amazing Community of Over 451,000 Peers!

Schedule mock interviews on the Meeting Board, join the latest community discussions in our Consulting Q&A and find like-minded Case Partners to connect and practice with!
Meeting Board
Consulting Q&A
Case Partner

How does the Consulting Q&A work?

Anyone can ask a question
Anyone can write an answer
Upvotes let answers rise to the top
What would you like to ask or discuss?

How to prepare for BCG online case?

BCG BCG Case Interview BCG online case bcgtest calculation italy preparation quant problems schedule
Most recent answer on Nov 26, 2022
The best answer (on Sep 09, 2018) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Sep 09, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, I have uploaded both test samples here (Online test is about airlines). I've also added BCG written case sample (Next round) and Bain written case: https://www.dropbox.com/sh/zor4m49eyx5qxal/AABeUN6mtiGkWhEklRjs ... (read entire answer)
21
Answers
42.4 k
Views
124
Total Upvotes
on Nov 26, 2022 on Nov 26, 2022
Last Activity

What are some 'creative' ways to increase topline revenue?

Bain & Company BCG brainstorming brainstorming questions calculation Case Interview McKinsey profitability revenue
Most recent answer on Jul 04, 2022
The best answer (on Jul 01, 2022) is from:
Florian
Expert
Highest-rated McKinsey coach (ratings, offers, sessions) | 500+ offers | Author of The 1% & Consulting Career Secrets
Florian
Expert
 gave the best answer on Jul 01, 2022
Highest-rated McKinsey coach (ratings, offers, sessions) | 500+ offers | Author of The 1% & Consulting Career Secrets
Hey there, Good question! The creative aspect is super important for McKinsey brainstorming questions. The quality of your answer depends on if you cover the issue broadly at the top-level (exhaustive) and add the neede ... (read entire answer)
4
Answers
1.4 k
Views
42
Total Upvotes
on Jul 04, 2022 on Jul 04, 2022
Last Activity

Market Sizing Questions: the market size of electric toothbrush in China

calculation estimation market sizing guess-estimates Market sizing
Most recent answer on Jan 23, 2022
The best answer (on Jan 06, 2022) is from:
Hagen
Expert
#1 Bain coach | >95% success rate | interviewer for 8+ years | mentor and coach for 7+ years
Hagen
Expert
 gave the best answer on Jan 06, 2022
#1 Bain coach | >95% success rate | interviewer for 8+ years | mentor and coach for 7+ years
Hi Ruizhi, First of all, it is great to see your consistency in finding out the solution to the question! This is indeed an interesting question which is probably relevant for quite a lot of users, so I am happy to prov ... (read entire answer)
6
Answers
2.1 k
Views
78
Total Upvotes
on Jan 23, 2022 on Jan 23, 2022
Last Activity

is having a cheat sheet during virtual interviews be considered as cheating ?

calculation case math CaseCalculations Math problem McKinsey Interveiw virtual
Most recent answer on Apr 15, 2021
The best answer (on Apr 14, 2021) is from:
Francesco
Expert
#1 Coach for Sessions (4.500+) | 1.500+ 5-Star Reviews | Proven Success (➡ interviewoffers.com) | Ex BCG | 10Y+ Coaching
Francesco
Expert
 gave the best answer on Apr 14, 2021
#1 Coach for Sessions (4.500+) | 1.500+ 5-Star Reviews | Proven Success (➡ interviewoffers.com) | Ex BCG | 10Y+ Coaching
Hi there, There is no issue in having a fraction table: The interviewer will never know – unless you give answers in an unrealistically short amount of time It is not going to be a relevant differentiator – they ... (read entire answer)
8
Answers
3.0 k
Views
60
Total Upvotes
on Apr 15, 2021 on Apr 15, 2021
Last Activity

Percentage Math Practice

calculation mental math
Most recent answer on Nov 16, 2020
The best answer (on Jul 18, 2018) is from:
Sidi
Expert
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Sidi
Expert
 gave the best answer on Jul 18, 2018
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Hi Mark, I am not sure I understand your challenge. Performing this kind of calculations will already give you the percentage, just expressed as a decimal figure (0,625 or 62,5% in your above example). What you can ... (read entire answer)
3
Answers
4.0 k
Views
3
Total Upvotes
on Nov 16, 2020 on Nov 16, 2020
Last Activity

Calculating the profit margin of two merged entities

calculation CaseCalculations Margin
Most recent answer on Nov 15, 2020
The best answer (on Nov 13, 2020) is from:
Cédric
Cédric gave the best answer on Nov 13, 2020
In order to answer that question you need additional informations. If we assume there is no synergies from the merger (need to make sure of that) you'll need to have revenues of both companies or at least the ratio of r ... (read entire answer)
4
Answers
5.9 k
Views
4
Total Upvotes
on Nov 15, 2020 on Nov 15, 2020
Last Activity

Hi coaches, could you plz provide some advise for improving mental calculations?

calculation math
Recent activity on Aug 22, 2020
The best answer (on Dec 05, 2019) is from:
Clara
Expert
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut
Clara
Expert
 gave the best answer on Dec 05, 2019
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut
Hello! The best is to practice, practice, practice! I could recommend you to start with: 1. GMAT exams: that can be found for free in the internet (GMAT prep with The Economist, London Business School free trial, e ... (read entire answer)
4
Answers
1.6 k
Views
21
Total Upvotes
on Aug 22, 2020 on Aug 22, 2020
Last Activity

How many trains are there in London?

brainteaser calculation estimation
Most recent answer on Sep 06, 2019
Anonymous A asked on Sep 05, 2019
I got this question during an interview for a non-consulting job before I learned at all about structuring and break-down analysis tecniques (so I was not prepared at all!). At the time I went down a "number of tube sta ... (read entire question)
1
Answer
2.9 k
Views
0
Total Upvotes
on Sep 06, 2019 on Sep 06, 2019
Last Activity

Can writing out calculations slow you down when taking PST and gmat style tests?

calculation GMAT PST
Recent activity on Sep 12, 2018
The best answer (on Sep 12, 2018) is from:
Guennael
Expert
Ex-MBB, Experienced Hire; I will teach you not only the how, but also the why of case interviews
Guennael
Expert
 gave the best answer on Sep 12, 2018
Ex-MBB, Experienced Hire; I will teach you not only the how, but also the why of case interviews
Can writing out calculations slow you down? Well, yes - of course! What will happen if you don't write it down however? Can you do the math in your head (or estimate it)? If so, don't write things down. If you can't, th ... (read entire answer)
3
Answers
2.5 k
Views
1
Total Upvotes
on Sep 12, 2018 on Sep 12, 2018
Last Activity

Tips to do big multiplications in my mind

big numbers calculation case math mental math multiplication
Recent activity on Jul 24, 2017
Anonymous gave the best answer on Jul 23, 2017
Most people struggle with big numbers with a lot of zeroes. Here's how I teach my students and I've gotten great results w/ it. The thing to remember is: 1000 = K, 1000,000 = M, and ... so on for "B"). Now, K * K = ... (read entire answer)
9
Answers
20.9 k
Views
72
Total Upvotes
on Jul 24, 2017 on Jul 24, 2017
Last Activity
10 results

Consulting Q&A – Ask Questions about Your Career

In this overview, you will find all the questions asked so far by the PrepLounge community. Anyone can ask questions and write answers. Our coaches are also happy to share their expertise. If you like an answer, give it an upvote so that it rises to the top. Here you can also find our guidelines and FAQs for the Consulting Q&A.

Cookie and Privacy Settings
This website uses cookies to enable essential functions like the user login and sessions. ... (Read more) We also use cookies and third-party tools to improve your surfing experience on preplounge.com. You can choose to activate only essential cookies or all cookies. You can always change your preference in the cookie and privacy settings. This link can also be found in the footer of the site. If you need more information, please visit our privacy policy.
Data processing in the USA: By clicking on "I accept", you also consent, in accordance with article 49 paragraph 1 sentence 1 lit. a GDPR, to your data being processed in the USA. The USA is not considered to have adequate data protection legislation. If you need more information please view the individual settings.
I accept
Manage settings individually
Questions or Feedback?
Select category
  • Select category
  • Case Interview Preparation
  • Coaching
  • Technical Problems
  • Other
Your name
Your email address
Cancel
How likely are you to recommend us to a friend or fellow student?
0
1
2
3
4
5
6
7
8
9
10
0 = Not likely
10 = Very likely