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# Interview Questions

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## Interview Questions

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### Internal Audit Senior at Ameren was asked...

Oct 14, 2015
 What type of audit experience do you have? 1 Answer I supervised Federal income tax audits, directed audits of contractors and engineering firm, managed multiple internal and external audits of division, and direct experience in multiple regulatory audits.

### Manager of Financial Planning and Analysis at Osage Bio Energy was asked...

Nov 3, 2015
 How to calculate the NPV of a new opportunity

### Investment Analyst at DC Energy was asked...

Mar 31, 2010
 f(n) is a function counting all the ones that show up in 1, 2, 3, ..., n. so f(1)=1, f(10)=2, f(11)=4 etc. When is the first time f(n)=n. 7 Answers Wouldn't that merely occur @ n = 1? sorry, forgot to mention other than the trivial case at n=1. the answer should be around 20000 if i recall correctly (think its 19991 but need double check on that) f(0) = 0, if we are dealing with real numbers, zero counts Show More Responses In working it out in a very painful way, I got 199,991. f(9) = 1. f(99) = 1 * 10 + 10 = 20. f(999) = 20 * 10 + 100 = 300. (the 2-digit sequence occurs 10 times, and then you need to add 100 for all the numbers like "1xx") Then we can think about f(20) or f(200) since a lot of the 1's occur in the 100's) f(20) = 1 * 2 + 10 = 12 f(200) = 20 * 2 + 100 = 140 f(2000) = 300 * 2 + 1000 = 1600 f(20000) = 4000 * 2 + 10000 = 18000 f(200000) = 200000. f(199999) = 200000. f(199991) = 199992. n decreases faster than f(n), so I think 200000 is our answer. I think the above is very close but one tiny step away. f(199999)=200000. Correct. But from here, if n decrease by 1 each time, f(n) decreases by 1 as well until n hits 199991, which contains two 1s, f(199991)=199992. So, f(199990)=199990. Bingo! besmart is close. I cheated by coding it up and 199981 is the first one after the trivial case.

Jun 26, 2012
 I was asked to describe in detail the hedges I would implement to protect myself on a cargo of Petroleum bought today for future delivery in one region on local pricing with intention to deliver if by sea to a different region on totally different pricing. 6 Answers simple.. sell it on spot again.. n save on physical movement. but if market is getting low, then go for put option... Hi Athos, could u plz elaborate this..can swap be implemented here.. Go short on futures with expiration at delivery date Show More Responses Hi .. Was this the final round interview in Geneva? Can you elaborate a little more on what all questions were asked? Thanks. you might also have to hedge the exchange rate risk between the currencies... if u hedge by going short on futures than ur currency risk is hedged automatically as ur futures are in USD...

### Engineer at Schlumberger was asked...

Jun 1, 2012
 How do you determine if the light switch works in a refrigerator with the door closed? 6 Answers How did you answer it? open the door and try to close the light switch by hand and see if it works? My thinking is that it's a trick question and the answer is "why would you need to?" - If you aren't going to open the door to look for something in the refrigerator, then why do you care whether the light works or not? Show More Responses 1. use a camera 2. cut the fridge open to see if the light goes off. 3.Open the fridge and press the switch to see if it works. 4.Touch the bulb when the fridge is opened to see if it's warm. Can't remember the 5th answer I gave them.... I was asked to give 5 ways of knowing if the switch work. Measure and compare amperage with the light on and the light off? put your thumb over the sensor. if the light goes off the switch works

Feb 1, 2011

### Software Developer Intern at Halliburton was asked...

Nov 2, 2009
 What is the angle between the two arms of the clock at 2:40? 7 Answers int time(int h, int m) { angleH = (h*360)/12; angleM = (m*360)/60; return Math.abs(angleH - angleM); } 160 degrees if a circle is bisected, the degree would be 180, as a circle is 360 degrees. How do you come up with 160? Show More Responses 160 of course http://en.wikipedia.org/wiki/Clock_angle_problem#Equation_for_the_angle_between_the_hands This should help http://www.mathcelebrity.com/clockangle.php?num=2%3A40&pl=Calculate 360*(40/60)-360*(2/12)-(360/12)*(40/60)=160

### Field Engineer at Schlumberger was asked...

Mar 12, 2012
 If water in a well rises 2 feet each day and falls 1 foot each night, how long til the water reaches the top of a 10 foot well 5 Answers on the 9th day 2*X-1*X=10 then X=10 X= days passed 2*X-1*X=10 then X=10 X= days passed Show More Responses It will reach the top on the 9th day, the question only asks about reaching the top and not remaining at a 10 foot level. The level will be 8 ft at the end of 8th day and then it will go up to 10ft the next day; day 9. every day it rises 2 feet during the day and one feet at night it drops basically it rises only 1 foot each day and shall take 10 days to get to 10 feet.

### Manager, Information Technology at Waste Management was asked...

Apr 17, 2013
 Why are manhole covers round? 9 Answers Really? A round cover won't fall into a round hole. Who cares? Show More Responses Because they have to cover a round opening Because there is fiber cable that tunnel between buildings and having manhole allows people to pull new cable but these manhole also need security which is why if you pull the cover off an alarm will go off tell someone that's it has been open. Also there is normal a second lock as well before you can get into most manholes. good question, could be because squares are more expensive and use more material since a circular shape would have less surface area, also maybe easier to create in factories. I'd imagine you can get it to the hole easier by rolling it on edge, it wouldn't chafe/snag the wires pulling things down the hole and it's harder for a vehicle to snag a corner or sharp edge driving over it. But what do I know ... Lol To bang it Round covers can't fall into the opening where as a square cover can be turned slightly and actually fall through the opening

### Field Specialist at Schlumberger was asked...

Mar 11, 2014
 On a clock, what is the difference in the angle of the minute hand and the hour hand when the clock shows 3:15. 5 Answers You can answer this question a number of ways with trig. But the simplest way is to think about it. a Circle (clock) is 360 degrees. A clock as 60 mniutes on it. 360/60=6 degrees per minute If the clock reads 3:15, that means the hour hand is on the 3, and the minute hand is 1 minute past the 3. Therefore the answer is: 6 degrees The minute hand is front of the hour hand. The answer is simply, ZERO! Show More Responses If a clock reads 3:15, then the minute hand is on the "3" (at zero degrees given a standard unit circle configuration). The hour hand is a little ways past the 3, a quarter of the way to the 4. There are 360/12= 30 degrees in each hour section. Since the hour hand has advanced a quarter of the way through the 3-4 hour section, 30/4= 7.5 degrees. So the hour hand is at -7.5 degrees and the minute hand at 0 degrees. There is a 7.5 degree difference. 6 degrees
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