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Monitor Case Interviews: Without calculator?

Hi Preplounge, 

first of all - thank you very much for all the great content offered for aspiring consultants like me. 

Since I have a monitor deloitte interview´in a german office coming up, I wanted to know: are calculators allowed in their case interviews? I would assume that they are not, however I have seen a couple of interview ratings on glassdoor that indicated they were given a calculator. 

Thanks for you help!

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Sidi
Coach
on Jul 04, 2019
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 400+ candidates secure MBB offers

Hi!

Yes, you are allowed to use a calculator! It is provided by the company (a really basic one).

The format of the Monitor case interview is quite different from MBB. You get information in written form, then you have about 15 minutes time. Then the interviewer comes back in and asks you to walk through your thinking. E.g., How do you view the market, why do you see this firm as a competitor and not this firm? Which segment to concentrate on going forward? Etc. 

Cheers, Sidi

Vlad
Coach
on Jul 03, 2019
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School

Hi,

In general, the calculators are not allowed for a live case. They can be allowed for a written case.  If you have a live interview I would not rely on Glassdoor feedbacks and practice fast math. Several sources that can help you:

1) Learn how to multiply double digit numbers (https://www.youtube.com/watch?v=6ndkkPZYJHo).

2) Learn how to work with zeros. You've mentioned - always use 10^power instead of zeros

Example:

300x9000 = 3*10ˆ2 x 9*10ˆ3=3x9*10ˆ(2+3)=27*10ˆ5

Handwritten it looks not that complicated. If you get used to writing all the numbers that way, you will never loose zeros and all multiplications/divisions will be replaced with + or -.

3) Learn the division table up to 1/11 (i.e. 5/6 = 83.3%). It will help you calculate any percentage problems

Good luck!

Ian
Coach
on Jul 04, 2019
Top US BCG / MBB Coach - 5,000 sessions |Tech, Platinion, Big 4 | 9/9 personal interviews passed | 95% candidate success

I would be shocked if calculators are allowed (unless it's a written case). Prepare for no calculator!

Furthermore, if other decisions like this come up, remember that it's always better to be prepared for the "worst" - it never hurts to be ready for anything.

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