Hello Everyone, Did anyone interview with capital one ? They have a mix of qualitative and quanti... (more)

# All questions tagged Math problem - Consulting Q&A - PrepLounge.com

Ask a question## McKinsey Sample Case - Logic Question...

Hi there, Let me chime in here. First, try to think of this problem in terms of the expected value of the candidate drug: Expected Value = Likelihood of success * Present Value (in case of su... (more)

## Complex Math Drills

Not exactly what you are looking for, but i suggest you spend 15-20 minutes a day on caseinterviewmath.com for rapid-fire practice. It will rank you by speed and accuracy as well, i used it to grest e... (more)

## Quant skills

Hi Moji, it seems your issue is not the math computation, but rather how to structure the math part once you receive a question (that is, the logic behind that you should apply). This means you sho... (more)

## Getting stuck on case exhibits

Eugene, some really good questions in here! Let me try to address them. First, can you 'overthink'? Yes of course! I am not sure this was really the issue in your particular case though: sometimes,... (more)

## Math: word problems exercises

What do you mean by word problems? The mental math tool on this site is good for training your calculation speed

## Math tricks for small decimal numbers

Hi Jana, It won't work where you have really ugly numbers but one trick to keep in mind is the 'invert and multiply'. So to use your case: 0.024/0.08 = (0.024/1) / (4/5)... (more)

## Math prep : CAGR without excel - any tips?

Hi Anonymous, basically here you have to compute (1+x)^a=V where you donâ€™t know x and where a=5 and V=1,5. For relative low interest rates and periods, the simpler process for precise... (more)

## BahnCard 25 / 50 / 100 Question

Answer should be 5600km. 1. Find total kms where: Avg. BC25 = BC100 (50 + x*0.75)/x = 3000/x 2. Find total kms where: Avg. BC50 = BC100 (200 + x*0.50)/x = 3000/x The larger answer is the corr... (more)

## How to quickly calculate compound interest for a period of 54 years?

Hi Andreia, this is definitely a case where you can apply the rule of 72 to get a rounded answer: Step 1: find the amount of time the initial capital would double. Dividing 72 by 4, you get 1... (more)

## Enhancing skills for mental math

Hi, Here is how you can improve your math skills: 1) Mental math - train, train, and train again Learn how to multiply double digit numbers (https://www.youtube.com/watch?v=6ndkkPZYJ... (more)

## Calculations: When is an estimate not good enough?

Hi Anonymous, first of all, let me state that one result of proper case interview preparation will be that this question will become completely irrelevant to you. ALL calculations in Consulting cas... (more)