2 questions, 30 minute telephone interview. 1- determine how many integers from 1-10,000 include the number 7. 2- you have a balance scale and 10 coins, 9 of which are the same weight and the other is different. determine in the fewest amount of measurements which coin is different and if it weighs more or less than the other 9 coins.
some physics question : a man was going up and down on the stairs, asking how long it will take or stag like that
3)100 students have different talents. The can sing, dance or act. Some students have more than one talent, but none has all 3 talents. There are 42 who can not sing, 65 who can not dance and 29 who can not act. How many students have 2 of these talent?
Can you react as a family member with people that you work with daily from sun up to sun down.
What do you like to do for fun in your free time
What topics did you cover at university related to seismic processing?
(I am rephrasing question for privacy concern)Q. 1000 different balls in a bucket. One can select 250 balls at once. What is the probability of picking a ball at least once after 4 different picks (select and dump again into the bucket).
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.
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.
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