Google Interview Questions and Answers Scientifically Baked

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Google Interview Questions Answers

• SCIENTIFICALLY BAKED

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How Many Golf Balls Can Fit In A School Bus?

• Answer I figure a standard school bus is about
  8ft wide by 6ft high by 20 feet long. that means
  about 1.6 million cubic inches. I calculate the
  volume of a golf ball to be about 2.5 cubic
  inches (4/3 pi .85) as .85 inches is the
  radius of a golf ball. Divide that 2.5 cubic
  inches into 1.6 million and you come up with
  660,000 golf balls. However, since there are
  seats in there taking up space and also since the
  spherical shape of a golf ball means there will
  be considerable empty space between them when
  stacked, I'll round down to 500,000 golf balls.

3
How Much Should You Charge To Wash All The
Windows In Seattle?

• Answer This is one of those questions where the
  trick is to come up with an easier answer than
  the one that's seemingly being called for. We'd
  say. '10 per window.'

4
Why Are Manhole Covers Round?

• Answer So it doesn't fall through the manhole
  (when the plane ordinarily flush with the plane
  of the street goes perpendicular to the street.)

5
Design An Evacuation Plan For San Francisco

• Answer Again, this one is all about the
  interviewer seeing how the interviewee would
  attack the problem. We'd start our answer by
  asking, 'what kind of disaster are we planning
  for?'

6
How Many Times A Day Do A Clock's Hands Overlap?

• Answer 22 times.
• From Wiki Answers
• AM
• 1200
• 105
• 211
• 316
• 422
• 527
• 633
• 738
• 844
• 949
• 1055

PM 1200 105 211 316 422 527 633 738 844 9
49 1055
7
A Man Pushed His Car To A Hotel And Lost His
Fortune. What Happened?

• Answer He landed on Boardwalk. (Painful, right?)

8
Explain A Database In Three Sentences To Your
Eight-year-old Nephew.

• Answer The point here is to test the applicant's
  ability to communicate complex ideas in simple
  language. Here's our attempt, 'A database is a
  machine that remembers lots of information about
  lots of things. People use them to help remember
  that information. Go play outside.'

9
You are shrunk to the height of a nickel and
your mass is proportionally reduced so as to
maintain your original density. You are then
thrown into an empty glass blender. The blades
will start moving in 60 seconds. What do you do?

• Answer This one is all about the judging
  interviewee's creativity. We'd try to break the
  electric motor.

10
You're the captain of a pirate ship.and
your crew gets to vote on how the gold is divided
up. If fewer than half of the pirates agree with
you, you die. How do you recommend apportioning
the gold in such a way that you get a good share
of the booty, but still survive?

• Answer You divide the booty evenly between the
  top 51 of the crew.

11
You have eight balls all of the same size
Seven of them weigh the same, and one of them
weighs slightly more. How can you find the ball
that is heavier by using a balance and only two
weightings?

• Answer You divide the booty evenly between the
  top 51 of the crew.

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