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Er werd een Business Operations Analyst gevraagd...2 februari 2011

### 25 horses, 5 race tracks. How many races you have to run to select top 5 horses.

51 antwoorden

The answer is 9. Assuming: - There's no time measuring (stopwatch), just relative places. - The horses perform consistently. - A maximum of 5 horses per race. First we need 5 races (A to E) to get relative scores for all 25 horses. Let's take a worst scenario: the list was already ordered (A1 fastest and E5 slowest), so race A contained the top 5. The 6th race would be the winners of the 5 races (A1, B1, C1, D1, E1), and would give A1 as the fastest of all. This would also mean that some horses can be excluded (only 4 more places to fill): B5 C4, C5 D3, D4, D5 E2, E3, E4, E5 For the 7th race, A2 would replace A1, and A2 would be appointed as the runner-up (of all). We also can exclude some more (only 3 more places to fill): B4 C3 D2 E1 For the 8th race, A3 would replace A2, but as E1 has been excluded, we got a vacancy. Let's add C2 for worst case scenario. The winner would be A3, and we can exclude more horses (only 2 more places to fill): B3 C2 D1 At this point there're only 5 horses who have not yet been classified or excluded, so the winner and runner-up of the 9th race would give 4th and 5th overall. Minder

You guys are not doing CS! 10 runs is my answer. 1. randomize 5 groups, each of 5 horses 2. rank them within each group, I will use Anuradha's notation (5 races) 3. pick the best of each group, race to figure the 1st place, call it A1 (1 race) It should be clear, it wins all times, every one lost once. 4. remove it. substitute 2nd best in. repeat 3 (in my eg. A2,B1,C1,D1,E1) now you have second place. keep going, you get the first 5 and ranking! So, 5+5=10 races in total. Minder

Anuradha's solution still has problems. (Even if we go with Anuradha's assumptions that you can only race one horse per track, and also assuming that we don't have a stopwatch and must compare horses placing positions) What if the fastest five horses are A1, B1, C1, D1, and E1 ? In Anuradha's second step, he elminates two of the fastest horses (D1 and E1) . He's assuming that A2, B2, or some of the other horses from the other heats are faster, but he hasn't actually tested to see if that is true. Minder

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31 antwoorden

inane interview questions

The kardashians

Answering stupid questions from moronic interviewers.

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### Why do u want to work for JetBlue

18 antwoorden

June 30

Why are they taking so long? Have you contact them? Did you do your background and drug test Minder

April interviewee, how long after your interview, did they contact you regarding bkgrd n fp? Minder

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### From the in-person panel interviews: - Uber is opening up a city remotely (i.e. Milwaukee will be operated out of Chicago). How would you make the drivers in Milwaukee feel equal to the drivers in Chicago. This was maybe the worst, most vague question of them all. - Uber drops you in a new market (i.e. Oklahoma City) and says you have two weeks until we open here - go! What do you do? - Say an Uber black car driver makes \$30/ride with a 20% commission. How do you convince him to upgrade to a new made up service UberSuper with a 25% commission? What costs will the driver incur in upgrading. How much more will he have to make each week, etc. Note: it's not enough to just walk them through mentally how you'd do this, be prepared to do the math on the fly. Very annoying. - An Uber competitor opens in your city with unlimited cash capital, if you were them how would you steal Uber's customers? If you were Uber how would you convince drivers not to leave?

18 antwoorden

Antonio, Sandro - hope you guys get good luck ... check your email for some hot man-on-man adult newsletter signups. +1 No_Cheating! Minder

I confirm it is the same test... it is really hard..., thanks god I prepared before with.. try www.uber-analytical-test Minder

Anyone have any ideas on how uber makes drivers in Chicago and Milwaukee feel equal? Minder

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### If I handed you a rubiks cube and told you that it had to be solved by tomorrow, how would you respond?

15 antwoorden

Such questions are really stupid IMHO and I feel like punching the interviewer for asking crap like this. I don't think such questions prove anything. A person can be really good at handling situations but not respond likewise and a pretentious person can do very well in such cases but do a horrible job when hired. Please interviewers stop with such questions! Minder

If I were asked this question I would say, "You'll have it today". How you do it isn't too important, there are literally a million ways to "solve" the rubiks cube they're handing you, it's not a cube, it's any problem they need solved, just get it done as soon as you can, wouldn't you like it if you asked someone to do something &amp; they went above &amp; beyond? Whether it's an inter-office request or anything else, you are always either someone's customer or vendor &amp; this is called "giving excellent customer service". This question is begging for Excellent Customer Service. Minder

Anyone that asks a question of this nature is looking for a typical, corporate behind kissing answer. personally I was much more impressed with your honest answer than I would be by someone, whose nature and work ability I have no idea about, answering like someone else did on this with "You'll have it today." You could have answered with that and have not the first clue about "customer service", because it is just a brown nosing answer. To me, a good answer is honest and forthright, and I never want to just hear what the interviewee thinks I want to hear. Minder

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### CASE: Cross-selling Credit Insurance to Cardholders direct mail: .50, 1% response rate, avg balance \$1000, 5% claim insurance, etc. Profitable? How make more profitable? What if response rate doubled but claims doubled? Make chart of profit curve, what does it mean if..., etc.

12 antwoorden

Thanks for your response and guidance. I knew the revenue is monthly, but i thought claim rate is also monthly and hence calculated profit for each credit insurance sold per month. In light of your clarification Profit per card insurance per year = (10*12)-50-50 = 20\$ per year If we chose to calculate per month, we will need to consider monthly claim rate as (5/12) and also amortize the marketing expense over next 12 month. Profit per card insurance per month = 10-(50/12)-(50/12)= (20/12)\$ per month The profitability equation (per card per year) = 120x-10xy-50 For calculating any of the break even rates (x or y assuming 1 is known), 120x-10xy-50 = 0. For graph, P = 120x-10xy-50 Let me know if my analysis/answer is accurate and up to the mark. Thanks a lot for all your guidance. Minder

@ ghachla: The response rate is 1% that is 1 out of 100. I assumed 100 people are sent the mail. Hence the response rate is 1. As for the claim rate, the people who don't respond can't make claims. So out of the people who respond, the claim rate is 5% (i.e 1 person responds in 100 and out of that 1, 0.05 make the claim); Or to make it more clearer, if we assume 10000 people are sent the mail, 100 respond (because of the 1% response rate) and 5 out of the 100 make claims (because of the 5% claim rate). Minder

Looks like I left out the price of the insurance: customers would pay 1% of monthly balance for insurance. Minder

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### You have the choice between using first class or third class mail for a letter you are sending out to potential customers. First class costs \$0.50 per piece and reach 100% of potential customers. Third class costs \$0.40 per piece and reaches 80% of potential customers. Which do you use?

10 antwoorden

either one is good. For example, you will reach 0.8 person by spending \$0.4. If divided 0.4 by 0.8, we get that we will reach 1 person by spending \$0.5. So two methods have the same effect. Minder

First class should be used, as the cost of each delivered letter will be the same, but you will reach all of your intended audience. Example: 1000 pieces to be sent, sending first class costs \$500 and reaches 1000 (\$.50 per peice), and sending second class costs \$400 and reaches 800 (\$.50 per piece) Minder

@gaurav: don't make it too complicated. they just want to know the costs of reaching the customers. peppermint is right. Minder

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### Behavioral based questions were easy to prepare for. Amazon prefers the STAR (situation, task, action, result) method to answer. Would suggestion preparing for the math flow question. I was asked the following: You have 30 associates who all work an 8 hour day, 5 days a week. 2 need to be in indirect (non-volume producing) roles. Your direct (production) rate is 150 units per hour, but you have two 15-minute breaks during the day. How many units can your department produce in a 40 hour week?

9 antwoorden

(30 - 2) associates = 28 28 associates/hour * (8 - 0.5) hours/day * 5 days/week * 150 units = 157,500 units/week However, this assumes 100% utilization all the time and this is probably unrealistic. I would then apply a reduction to efficiency to account for unexpected delays. 157,500 units/week * 90% = 141,750 units/week ... final answer. Minder

This is a math question not an estimation on potential variables through sickness, breakdowns etc The answer is 157500 Minder

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### There are 27 balls with one ball having additional weight. Total how many attempts you have to make to check all balls using a sisaw

10 antwoorden

3. group the 27 balls into3 groups of nine, weigh 2 of the groups. If one is heavier, continue with that group. If they are equal, continue with the unweighed group. Break those nine into 3 groups of 3, weigh 2 groups. If one is heavier, continue with that group, otherwise use the unweighed group. With the 3 left, weigh any two. If one is heavier, you have it. If they are the same, then it is the unweighed ball that is heaviest. You have used the scale 3 times Minder

3 You can guarantee the answer in 3 steps, if required. However, you no longer stand a chance of obtaining the answer in the first 2 weighings as I described immediately above. 1. Divide balls into 3 groups of 9. --&gt; Weigh two of the groups. This will identify the heavy group. 2. Divide the identified heavy group into 3 groups of 3. --&gt; Weigh two of the groups. This will identify the heavy group. 3. Separate the 3 balls in the heavy group and weigh. --&gt; This comparison will identify the one heavy ball from the original group of 27. Minder

3 attempts - attempt 1 - divide 3 sections 9balls 9balls 9balls pick a section which is different in weight, attempt 2 - divide 3 sections 3balls 3balls 3 balls pick a section which is different in weight, Attempt-3- divide 3 sections 1ball 1ball 1ball pick a ball which is in different in weight Attempt 3 - Minder

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### Presentation on what my plans would be within the first 90 days

9 antwoorden

Sean did not write this review. I did and I am a genuine person who had an interview with Sean. Please do not have a go or accuse Sean of writing this review. I wrote it and it was my typo. This review is a true reflection of my experience which is the reason I felt compelled to write it as my experience with the owner was professional. Minder

Another fake review. If the company was so good why did you not take the role? Hmmm Minder

Because there was too much travel to the Pand office which I could not commit to. Leave it at that. You have obviously a grievance with this employer which is between you and them. That doesn’t mean my experience would be the same. I fact it wasn’t. Not a fake review. Get over it and yourself- move and jog on pls Minder

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