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Operations Analyst Interview Questions


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

51 Answers

7 Races First race all 25 in groups for 5 to figure out top 3 in each group. (15 left) Call them A1 B1 C1 D1 E1 A2 B2 C2 D2 E2 A3 B3 C3 D3 E3 Here A1 is faster than A2. A2 is faster than A3. The same applies for the rest of the groups. Now race A1, B1 C1 D1 E1 Lets say the order of the horses according to ranking was A1, B1,C1,D1,E1 So A1 is No 1 Now A1 is faster than B1 and B1 is faster than C1. So we can get rid of the entire D and E groups 9 horses remaining Also A1 is faster than B1 and B1 is faster than C1. So we can get rid of C2 and C3 7 horses remaining A1 is faster than B1. B1 is faster than B2. get rid of B3 6 horses remaining Out of these, We know A1 is the fastest. So now race A2, A3, B1,B2,C1 to figure out No2 and No3 positions

One race is the answer

Why 1?

Rate yourself on a scale of 1 to 10 how weird you are.

15 Answers

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.

13 Answers

What are the number of new customers needed in order to break even?

7 Answers

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 Answers

Pretend 1% of the population has a disease. You have a test that determines if you have that disease, but it's only 80% accurate and 20% of the time you get a false positive, how likely is it you have the disease.

12 Answers

CASE: Recovering Written-off Past Due Balances 6 months past due, avg $2000 balance, 15% pay in full, profitable? If introduce settlement option for 60% of balance, 10% pay settlement but 5% of them dont pay in full, better choice? With new model, now 9% pay in full, but with settlement option now 10% take settlement but a third of original payers dont pay in full, better? etc. (poorly worded and confusing case. unhelpful vague interviewer, arggg, cost me the job).

3 Answers

Using pivot table on excel

3 Answers

What would do with a Facebook user who was having trouble with their account?

3 Answers

no behavioral questions, just case study

4 Answers
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