Whatsapp Groups is likely to have duplicated photos.

Calculate the wasted storage space from those duplicated photos.

Submit your answers in the comments and receive feedback.

**case interview math**

Whatsapp Groups is likely to have duplicated photos.

Calculate the wasted storage space from those duplicated photos.

Submit your answers in the comments and receive feedback.

Google Home is Google's brand of smart speakers that competes with Amazon's Echo.

What's the power necessary to handle Google Home's compute requirements?

Submit your answers in the comments and receive feedback.

Estimate the number of daily emails sent in the US.

Submit your answers in the comments and receive feedback.

Estimate the market size for your newly proposed Chromecast feature.

Submit your answers in the comments and receive feedback.

Estimate storage for Google Maps.

Submit your answers in the comments and receive feedback.

How many miles of road is there in the US?

Submit your answers in the comments and receive feedback.

Estimate the bandwidth needed if you built an optical fiber connection to Mars.

Submit your answers in the comments and receive feedback.

Estimate the number of golf balls that can fit in a 747 airplane.

Submit your answers in the comments and receive feedback.

Estimate the number of airports in the USA.

Submit your answers in the comments and receive feedback.

Estimate average savings per user in America.

Submit your answers in the comments and receive feedback.

How would you go about estimating the number of gas stations in the USA?

Submit your answers in the comments and receive feedback.

How would you estimate the number of trucks needed to start a grocery delivery service in a large city?

Submit your answers in the comments and receive feedback.

How many subway cars are in NYC?

Submit your answers in the comments and receive feedback.

Estimate the total square footage of paved area in Washington state. Highways, roads, sidewalks and gravel roads are considered paved areas. Buildings are not considered paved area.

Submit your answers in the comments and receive feedback.

What are the main components of cost for Google photos? Why does Google incur a cost when users transfer and view photos?

Submit your answers in the comments and receive feedback.

Number of companies in the world?

Submit your answers in the comments and receive feedback.

On our Slack interview community, Jennifer asked:

*Does anyone have a suggestion on how to practice estimation interviews without a 2nd person helping you out?*

The answer is yes! We've recently launched our case interview math practice software just a couple of weeks ago. You'll find over 50 practice questions including:

- Estimations + guessestimates
- Profitability
- Breakeven
- Price elasticity
- Lifetime value
- Stating assumptions

There are a few more reasons why you should check it out:

- This is perfect for those who are preparing for quant. heavy interviews such as McKinsey, BCG, and Bain.
- The practice problems are the same ones featured from my #1 Amazon.com best selling book on case interview math problems.
**It's free**.