N by N by N cube, paint its surface, cut it in to unit cubes, ratio of painted and all surface (of unit cubes) is 4, what is N? A dice, randomly remove one dot, roll it, what is the probability of get odd number? Coins of value 1, 5, 10, 25 cents, total number unknown, average value is 20, if add a 25 coin, average becomes 21, what is the number of 10 cent coins?
given the first two numbers of a geometric sequence, find the third one.
Are you healthy enough to work?
1) A man moving upwards on an escalator at a certain speed, then he turned downwards with some other speed. Find the number of steps of the escalator. 2) A and B are flipping a coin. What is the probability of A winning first? 3) A sphere inscribed in a cube with an edge x. Find the volume of the sphere.
ask for my papers
Why WesternGeco? Every interview asks you that tough, "why us?" you're in an interview, you want the job, does that matter?
What are the crucial points when you performed FWI on cable data, and why?
I was given 2 questions on conditional probability. I feel an elevated difficulty in math questions as the competition in oil and gas industry is now more fierce. Fortunately, I also felt that if someone diligently prepares for all existing examples on Glassdoor, it should be sufficient to ace this phone interview.
brain storm questions.
Deghost in seismic imaging preprocessing
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