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If You Can Crack These Interview Questions At Google, You Can Have The Job!

"Why are manhole covers round?"

Getting a job at Google is one of the most sought after jobs in the world. With their laid back and happy office environment, amazing pregnancy policies and other amazing things getting a job at Google is a pretty amazing feat. But not everyone can get in, only the smart one’s can.

Do you think you are smart? Then you should test these interview questions and see if you can apply for the job at Google:

“Why are manhole covers round?”

First of all, manholes are those small openings on city streets that lead to a sewer, and their covers are round so that they don’t fall into a manhole. If the covers were another shape, there’s a small chance it could fall in diagonally, which of course isn’t very safe.

“A man pushed his car to a hotel and lost his fortune. What happened?”

This is when playing games really pays off. In Monopoly, if you have a car and place it on someone else’s property, it will cost you some money, in some cases, everything you’ve got.

"A man pushed his car to a hotel and lost his fortune. What happened?"


“How many piano tuners are the entire world?”

Familiar with Fermi questions? Fermi questions are estimation problems commonly used in physics or engineering. This question is a perfect example, and it has already been addressed on Wikipedia in the context of Chicago:

“For example, we might make the following assumptions:

1. There are approximately 9,000,000 people living in Chicago.
2. On average, there are two persons in each household in Chicago.
3, Roughly one household in twenty has a piano that is tuned regularly.
4. Pianos that are tuned regularly are tuned on average about once per year.
5. It takes a piano tuner about two hours to tune a piano, including travel time.
6. Each piano tuner works eight hours in a day, five days in a week, and 50 weeks in a year.
7. From these assumptions, we can compute that the number of piano tunings in a single year in Chicago is

(9,000,000 persons in Chicago) ÷ (2 persons/household) × (1 piano/20 households) × (1 piano tuning per piano per year) = 225,000 piano tunings per year in Chicago.

We can similarly calculate that the average piano tuner performs

(50 weeks/year) × (5 days/week) × (8 hours/day) ÷ (2 hours to tune a piano) = 1000 piano tunings per year.

Dividing gives

(225,000 piano tunings per year in Chicago) ÷ (1000 piano tunings per year per piano tuner) = 225 piano tuners in Chicago.

The actual number of piano tuners in Chicago is about 290.”

"How many piano tuners are the entire world?"

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