# Consulting Interview Questions

Consulting interview questions shared by candidates

## Top Interview Questions

Have you ever been asked to do anything that you morally had an issue with? 2 Answers(After a pause, and some memory-bank searching) Yes, I was asked to falsify a time record. Yes, I was once asked to falsify a time record by a manager. I immediately reported it to his supervisor. |

They asked what you know about ABA and what experience you have with it. They also try to determine if you are qualified both physically and mentally for working with this special population. They need to know that you will be able to work with students that potentially can be violent and how you would react to them. 1 AnswerI did not have any experience with ABA but had researched it. I let them know a brief overview of it. |

Give me a time when you dealt with an upset resident or customer and how did you overcome? 1 AnswerWhen answering any kind of customer service question, make sure to present yourself as a patient problem-solver who is able to maintain a professional demeanor. Listen to the resident's issue fully and try to get to the root cause of the problem so that you can find a logical solution that diffuses the situation. |

### Employee Relations Consultant at CNA was asked...

Discuss experiences with conflict resolution. 1 AnswerIn my career as an employee relations professional I have always found it best to remain calm, gather facts, consult both parties, and then do my best to make an unbiased judgement which will hopefully benefit both parties. |

### Associate Consultant at Bain & Company was asked...

Estimate how many windows are in New York 33 AnswersDivide and conquer. I may not know the answer to the question, but I can determine the answer because I can approximate two supportnig questions: * How many people are in New York (City or State, btw) * How many windows, on average, does each person have (home, car, work, shopping center, ....) I'll say 10M in NYC and 10 windows per person so my answer is 100M windows in NYC. 10 windows per person?!?! I want to see what apartment you're living in!! he said 10 windows per person total (including car, home etc). 10 makes good sense. However, i do believe you'll have to go deeper than that. i.e- calculate that, add businesses, shopping centres, cabs and passing cars etc. Show More Responses I would have said , "if you hire me, I'll get my team on that right away." Not everyone in the city has a vehicle, so 10 per person can't be the basis of calculation. estimated Define "New York". Should the answer include opportunities and operating systems? There is an N, e, w, a Y....nope, no windows Since Bain is a consulting firm, this question seems to be used as a way to probe applicant's approach to engagement problems. First ask questions to clarify the goal. Is New York the city, the state, or another municipality that happens to also be called New York, such as New York, Texas. Are we talking about windows on a building, or will it also include car windows, store shelf windows, or maybe even MS Windows licenses. After the information is clarified, it's time to analyze. Estimating the population and estimate an average number of windows per person is one approach, but it may seem too general. Another approach can be divide and conquer. Estimate the number of residential houses, estimate the number of offices, and number of vehicles, etc, and multiply by an average number for each type of structure. Round the number to the nearest million or tenth of million to make it easy to remember for the client. I don't do windows, sorry I gather that this very important question has some significant meaning to you, and I feel you should hire me to get to work on the answer right away. I'm going to need some support staff for this, and a travel expenses budget, and a small but dedicatd team of window counters. Gosh, see how when you ask me a question of genuine importance, I get all fired up? "call Microsoft" Show More Responses Four, the answer is four. Seriously?! No. Simple, all of them. If you are going to estimate correctly, you need to come up with a range. A single point estimate is pretty much guaranteed to be wrong. No matter which approach you take (average building floors by average number of windows, people * number of windows, etc), at best you get a midpoint of a range. The question is how wide does the range need to be? At this point, with little information, you need a pretty wide estimate (in the million window + range). Exactly why I was thinking of Corning as a great Private Equity deal! Let me explain...and let's take this one step further...let's start with the Eastern Seabord, and the number of windows that are really hurricane proof..now let's look at the advantages of Gorilla Glass, it's uses, and strategic opportunities...let's go bigger than New York! 42. as many as the glasses.. new y " O " rk. only one window. I personally don't have the answer but I will find out and get back to you. When do you need to have a response? windows 8 Show More Responses do i include window's on every1's computers monitor or laptop for this?? if so then 10 windows per person at instant will be less caz the question is not clear at all, only one microsoft windows more than door............ 1 window compulsory = no. of houses in NY There are 271,925,321 windows. If there are more windows then it would have been made after the survey and if it is less, then it would have broken down. Are you talking about glass pained windows? Do double pained windows count as two or only one. Should I include MS Windows? What about the number of windows the average person has open at any one time? Which version of MS Windows? Are we talking both server and desktop versions of Windows? I know the answers to all of these questions, but I need to know which ones you want included in the answer. Then (if you have some paper) write some numbers down, do some calculations and give them an answer of some big number that is based on the calculations you made. (This is a question where they are trying to see if you can think outside the box and come up with some sort of reasonable estimate. There is no right answer that can be acheived or verified.) There are no windows for new york because it is a city not a house to provide windows @Bill: you forget '2' the after the '4' People 50m=dwelling x 5 windows =250million What size is your window dimensions ? Large commercial could equal 4 residential size windows. Do you consider single pane or double glass as still one window ? What about glass block windows, do they count ? Like Carl Segan used to say, billions and billions... |

You have a bouquet of flowers. All but two are roses, all but two are daisies, and all but two are tulips. How many flowers do you have? 42 Answers3. One of each kind. Two flowers, neither of which are roses, daisies or tulips. Maybe geraniums. If the problem requires that all flowers are R, D or T, then one of each will work. Three. 3 flowers - 1 rose, 1 daisy and 1 tulip Show More Responses Answer's 3, one of each. 3- one of each 6. 2 of each kind listed. Don't forget the trivial solution (none). We know there's two of each considering that the three types are not overlapping but we don't really know the total. The answer is "At least 6". Do you really have a bouquet if you have just 2 or 3 flowers? Otherwise, you have either 2 or 3 flowers The solution is quite simple, if you start with the “All but 2” first: Roses = All but 2 = Two flowers are not a rose; one tulip, one daisy Daisies = All but 2 = Two flowers are not a daisy; one rose, one tulip Tulips = All but 2 = Two flowers are not a tulip; one rose, one daisy Answer: One rose, one daisy, one tulip. The question is contradictory - the question says ALL of your flowers are Roses except two, and goes on to say ALL of your flowers are Daises except two. All of your flowers cannot be both Roses and Daises and Tulips. 3 3... Impossible is never a good answer... Show More Responses The real question is what did the man do to his wife to have to bring her flowers to begin with? Three. You have one of each kind. Isaac and Rayz, you both failed logic If I have 3 things, say a tire iron, a hammer and a hedgehog, I can accurately say that all but two are tire irons If I had six (let's say two of each of the above) and said all but two are tire irons, this fails. I have six objects, two of which are tire irons - the math shows that four items are not tire irons The answer only works at 3 unknown. Could be 3, could be 6, 9, 12, any multiple of 3 I would say, "Do you consider three flowers to be a bouquet?" Me: I have a Bouquet of flowers Nice riddle, but the way it is written there is no solution. If you have a rose, a daisy, and a tulip then all but two is a rose (not roses), all but two is a daisy (not daisies), and all but two is a tulip (not tulips). But if it was written this way the answer is obvious. The entire bouquet is flowers. So the answer is they are all flowers. This is one of the oldest riddles in the book. The questioner distracts the answerer by providing frivolous information - the number of roses, tulips and so on. Most answerers will try to give a literal answer to what they perceive as a literal "how many" question. When in fact, the questioner is asking how many of whatever number of stems in the bouquet are flowers and all of them are. I would go with luke..... 3, but I hate wording that is designed to mislead. I think that reflects poorly on the company. Show More Responses two buttercups :) Considering that n is the total number of flowers we have: n - 2 = t (the number of tulips) n - 2 = d (the number of daisies) n - 2 = r ( the number of roses) The question is: are there only roses, daisies and tulips in the bouquet ? If yes we also have a fourth equation: r + d + t = n In this case we add the three equations above and we get 3n -6 = n (because n = r + d + t) 2n = 6 n = 3 If there are more than daisies, tulips and roses in the bouquet we have a system of three equations with four unknowns so the solution space is infinite. All! @rumberobueno your math is great here, but it is NOT possible to have the 4th kind of flowers because it says: a) all but 2 are roses - in this case we can have at most 3 kind of flowers the same for the other cases, in conclusion we have only 3 kind of flowers and from your math we can say we have 1 of each kind. There is a definate mathematical approach to this question as was stated earlier but you can not add excess flowers. Look at it simplified: If R=roses, T=tulips, D=daisies and X = # in bouquet; where R, T, D, and X are whole numbers greater than 0 and assuming that there are said flowers in the bouquet. then R+2=X, T+2=X, D+2=X then R+2=T+2=D+2 therefore R=T=D, R+T+D=X, R+T=2; T+D=2, D+R=2 T=2-R and D=2-R therfore R must be less than 2 but greater than 0, then R=1 therefore T=1 and D=1 R+T+D=X X=3, If there are none of said flowers in bouquet then total number is 2. There is no other answer available with the question worded this way. Enough to make me sneeze. It's not clever to say "All of them." It's asinine. I get that there's math, but if you just take the actual question, "How many flowers do you have?" and you respond with "All of them" it shows a distinct inability to answer a question logically. Do you really have ALL of the flowers? Or are you simply confused as to the definition of the word "all"? It's like the old riddle my witty uncle used to aske me every time we passed a graveyard. " How many dead people are in there?" Answer: "All of them" I agree with Brian. This is a distraction for the one questioned. When we are a little anxious we tend to over think things. Just my opinion I agree that the correct answer is all of them are flowers. So many firms using questions like this have little to no clue as to why they are asking these and do little to elicit the kind of information about the candidate's fit with the job that an interview process should be gaining. If the job requires highly analytical skills than get some proven tests rather than interviewers putting interviewees off guard with silly questions that are not relevant to the job at hand. If you want to work for Brain Teasers, that would be a good question to pose along with many others. Why people don't want candidates to be at ease in a job interview astounds me as that is when you will get the best information out of them astounds me. Let n be the total number of flowers. When the problem says that all but two of the flowers are of one kind, it means there are n−2 flowers of that kind. Therefore, n−2 of them are roses, n−2 of them are tulips and n−2 of them are daisies. Assuming that this exhausts the list of flowers, we can write n−2+n−2+n−2=n which gives n=3 Show More Responses 3. 3. I have a bouquet of flowers. It was not quanitfied and I was not asked to quantify. A Bouquet is what I have a bouquet is 12, if 2 are roses, 2 are tulips, and 2 are daisies, then you have 6 flowers. So your bouquet has 6 flowers, 2 tulips, 2 roses, and 2 daisies. There is no boundary - infinite. it states you have a bouquet it does not give a max, just a min. 2 flowers. The question specifically states that all but two are roses, daisies, and tulips. Since it uses the plural form of each flower, obviously "one rose, one daisy, one tulip" is not the answer they are looking for. However, "zero roses, zero daisies, and zero tulips" would fit both the mathematical and grammatical constraints. P..S. I'm guessing that the 2 flowers are lilies. I like lilies. As has been observed, there are two possible answers: either 3 flowers (one rose, one tulip, and one daisy) or 2 flowers (none of which is a rose, daisy or tulip). The statement that the "mystery flower" solution is unsolvable is not quite correct, however. It simply requires a graphical approach, which I will try to describe. Let's define 5 variables: n = total number of flowers r = number of roses t = number of tulips d = number of daisies x = number of flowers which are neither roses, tulips or daisies (mystery flowers) Now let's represent the information given in equation form: n - 2 = r n - 2 = t n - 2 = d And I'll add an equation which proceeds logically from my definition of x: n = r + t + d + x Substituting, I get: (r + t + d + x) - 2 = r (r + t + d + x) - 2 = d (r + t + d + x) - 2 = t Adding and simplifying, I get: 2(r + d + t) + 3x = 6 Hmm. Seems like a lot of variables, and not nearly enough equations.... But wait... r, t and d are all equal to the same thing...which means they must all be equal to each other. So we can rewrite that last equation as: 6r + 3x = 6...or: 2r = -x +2 This is simply the equation of a line. Unfortunately, it has infinitely many solutions. However, I am going to place some constraints on the solution set: r => 0 x => 0 r is an integer x is an integer. I don't think there is a way to represent these constraints algebraically. But if I graph the line 2r = -x +2, it becomes clear that there are only two nonnegative integer solutions - either r = 1 and x = 0 (which means, since we decided that r = t = d, that I have three flowers - one rose, one tulip and one daisy OR r = 0 and x = 2 (which means, since we decided that r = t = d, that I have 2 flowers - zero roses, zero tulips, and zero daisies, plus two mystery flowers). 3 |

How many passengers leave JFK airport on a given day. 19 AnswersNot sure: approx. 100,000? 1.5 million no matter if they are flying in or out, they all leave Show More Responses My answer would have been the same: "Pretty much all of them!" :) planes leave, people board. ALL OF EM ! (and to elaborate - The no. of ppl flying in + the no. of ppl flying out --all leave basically some on foot and other on air All leave except for Tom Hanks, he stays stuck in "The Terminal"....... (You have to include some humor when you answer :) 50k how is this a brain teaser? This question tests how you think critically. In this example, you could start with estimating that JFK has about 100 gates, and that a plane leaves from a gate every 3 hours, totaling 800 flights per day. Guessing that the average plane holds 200 passengers, you arrive at 160,000 per day departing. The interviewer is not as interested that you get the right, or even close, answer, but rather the thought process you go through to figure it out. For those that are interested, the real number is about 131,000 per day based on statistics from 2007. the question was "How many passengers leave JFK airport on a given day.?" my answer is the (number of people arrives that day )+( the employees work there (except for the security guards)) after all no-one stays on the airport forever The answer is the thought process, as above. Personally, I'd have started with the number of flights: flight frequency per runway * runways * open hours. Assume half are leaving, then guess the number of passengers per plane. I might also point out that the number of assumptions multiplied together in that calc is such that you're unlikely to be within an order of magnitude of the right answer... Tim Besse stole my answer! And I thought I was the only one who thought of that. Seriously though, if I was asked this question in an interview I would answer "probably about half" figuring that half the flights are departing and half are arrivals, similar to what another poster stated. Depending on the position you are interviewing for they may be impressed by you going through a long critical calculation, I don't know. In my line of work, character is more important that pure intelligence. Show More Responses all of them 100% 1. Those passengers that arrive on an airplane either leave by another plane or leave the airport by other means. 2. Those passengers that arrive by other means take a plane and leave or they are not passengers. 3. That is, if you exclude those that are still there at midnight. You can assume this number is constant from night to night. Well, there are passengers in cars that come and go, those onboard planes that do the same and some perhaps catching a lift on a bicycle or maybe even piggyback. If there are those that try to actually ride on JFK, he's dead, so - good luck. I would have to agree with those that say all of them. However I must point out an addition to the facts. We are all assuming something when answering these types of problems and as such the answers are as much subjective as they maybe factual. To the rest here, READ the question. Passengers are ON the planes if not then they are NOT passengers! ALL passengers leave eventually however what is a 'day' not specified as 24hrs- because a 24hr period COULD span 2 'days'. ALSO it is possible that a plane could be held hostage on the tarmac for more than 24hrs - these passengers would not leave on the same 'day' so our total may be slightly less than 100% on any given day. Ultimately though, I agree that it is the interviewer's 'hidden' question that counts. With these types of questions the answers are not so mathematically obvious. But rather, the questioner is looking deeper into your logic, character, personality etc. Are you a thinker, do you think out-side the box, do you get frustrated, are you a smart-ass, etc. That's been my experience not all them. because som arrive at one day and leave the next day. My answer will be "A LOT!" the answer does not require a number but how will you find out. It depends on the day of the year and also on how many people are actually on the plane and if all of them are going to JFK or are catching connecting flights. |

How many minutes before 5pm is it if 30 mins ago it was four times as many minutes after 3pm? 11 Answers18 66 Could someone show their math on this please - I had trouble on this question. Show More Responses The correct answer is 24. 120 minutes between 3 & 5; 120 divided by 5 =24. 5pm less 24 minutes = 4:36pm 3pm plus 4 times 24 minutes (96 minutes) = 4:36pm You're forgetting the part where it says: "30 mins ago." It's not four times as many minutes since 3. 18 18 18 mins before 5 = 4:42. 30 before 4:42 puts the time at 4:12. There are 72 minutes between 3 and 4:42 divided by 4 is 18. So the answer is 18 mins before 5pm. That last explanation seems like you need to know the answer before you even start trying to solve. My solution is as follows: 30 minutes before 5 is 4:30 leaving 90 minutes between 3 and then. The remaining time needs to be split into an interval so that x4 exists. The most logical interval would be in 5ths because the 4 proceeding intervals would be 4x greater then the following. 90/5=18 for each interval. 18 being four times less then 72 minutes proceeding it. This literally look me about a minute and a half to reason through, which I'm assuming the interviewer would not want to sit through. Guess I would fail. The answer is 18 minutes. It made sense to me to sketch a timeline showing the 3 components of time given in the problem that add up to the 120 minute total span. (X = minutes before 5pm, 30 min gap, and 4X is time between 3pm and the start of the 30 min gap.) Visually and chronologically it would look something like: 3pm --> 4X --> 30 min --> X --> 5pm. So then algebraically, the equation is 4X + 30 min + X = 120 min. Therefore 5X = 90 or X = 18. 120 - x - 30 = 4 * x |

If there was a movie produced about your life, who would play you, and why? 12 AnswersWell, sadly, someone once said, upon meeting me for the first time, that I reminded him of Roseanne Barr. It made me very sad, because I find her extremely abrasive. However, if she could play a more Pollyanna type character, we do laugh similarly and are basically the same size. In America, someone white because that's all they care about. More than likely my part would be played by an actor who no one had really heard much about if at all, but his really really good. Show More Responses Molly Ringwald because I am very often compared to her. me-i am myself... Alf Myself, of course. No one else could possibly be me. Steve Martin would make me look good so he will do Except me, there is no one will have that capacity. if some body act, that is only an act. when I am alive. rowan atkinson, because he is strange, unique and well liked You, because you are interested in it. Because he's an anal zitpore like me, it's one of our best qualities. |

A snail moves up a 5m long tree as follows: 1) he goes up 3m in the morning and 2) he goes down 2m at night. How long will it take him to reach the top of the 5m tree? 5 Answers3 days. Not 5 days. Draw it out if you don't believe me. What was the technical interview about? Do they ask you questions about programming? I have the MANH interview soon and am not sure how to prepare for the technical interview! Thanks! @ Homer Simpson, The technical interview was simply them asking me to explain a "technical" process on the whiteboard. There was no programming, though I used a programming example in answering this question. The overall interview process requires little preparation, with the exception of the panel interview since I'm assuming you got the question before hand. Again they want to see the following: 1) Logical thought flow 2) Ability to present/explain on a white-board 3) Can assimulate concepts (including programming) quickly Show More Responses Thanks Boss for the quick reply! I just came back and I think it went well. How much time did they take to reply back to you? http://brainteaserbible.com/interview-brainteaser-snail-drainpipe-climbs-falls-at-night-how-long-reach-top |

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