Product Manager Interview Questions | Glassdoor

# Product Manager Interview Questions

"Often considered the �CEO� of their product, product managers oversee the strategy, production, and implementation of a particular product. Because product management teams include members from different backgrounds such as engineering, design, and data design, product managers must have strong communication skills and excel in cross-functional work environments. Expect to answer questions about your management abilities, prioritization skills, and experience working in product. Though not required, technical backgrounds are advantageous particularly when applying for roles at tech companies."

## Top Interview Questions

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Jul 18, 2012
 How many hotels are their in the US2 AnswersI flubbed the algebra on this question, which doesn't look good. Make sure to pick nice round numbers to make the math easy, and pay attention to the decimal point.51,214 see http://www.ahla.com/content.aspx?id=34706

### Product Manager at Red Robot was asked...

Nov 7, 2012
 You have 25 horses and you can race at most 5 at a time against each other, how many races do you need to run in order to find the 3 fastest horses. 2 AnswersAssuming that you have access to a watch, you would need 5 races, so at least each horse had raced once. Then you could use the times from those 5 races, and pick the top three in terms of time. Some might think that you need to have the top 3 of each heat keep racing until you found the top three, but that appears to be overcomplication. (remember just because a horse comes in the top of one heat doesn't mean it's faster than even the slowest horse in another heat... some heats might just be faster or slower than others). Thus I find 5 to be the simplist / most elegant solution.7 races, I believe. Say each horse is defined by a number and a letter for each heat and horse number: (A - E, 1 - 5) Race the A, B, C, D, and E groups for 5 races total. Assume they finish in order, A1 is first in the A heat, B1 is first in the B heat, etc... Then race the winners of each heat, A1, B1, C1, D1, E1...and assume they finish in that order as well... You can now eliminate the E and D groups because C1 is faster than all of them. Eliminate C2 - C5 because A1, B1 and C1 are all faster... Eliminate B3 - B5 because A1, B1 and B2 are all faster, and... Eliminate A4 - A5, because A1, A2 and A3 are faster You now know that A1 is the fastest, so you only have one heat left to run and that is the remaining horses, A2, A3, B1, B2 and C1... That brings the total to 7.

### Senior Product Manager at Amazon was asked...

May 4, 2012
 Read in a stream of numbers, print out the ones that are repeated an odd number of times.3 Answers1. Initialize set S = {} 2. Read a number from the stream. 3. If number is not in S, add it to S. If number is in S, remove number from S. 4. At any given time, the set S will have odd numbers of repeating numbers from the stream.Might be faster to use a hash table with bit value or a bit set to do this.There are 3 ways that this can be done - 1.) Outer loop to go thru each number and inner loop to calculate the no. of times each number appears. Time complexity is high. 2.) Store the number as keys in hash-map and count as values. 3.) XOR of the numbers is the best solution since it requires o(n) time and no additional space. Solution for 3. 1. res = 0 2. for number i in array res = res ^ array[i] 3. return res

### Product Manager at Pocket Gems was asked...

Sep 15, 2012
 You're stuck inside a square maze of unknown size. You start at the bottom left hand corner. The exit is at the top right corner. How can you find your way out most efficiently? What if the maze is of a known size?2 AnswersWhat was your answer for this? There's the wall-following method, but that may not be the most efficient. I believe the Trémaux's algorithm could be classified as 'efficient'. I don't believe knowing the size (dimensions) of the maze will be of any benefit.That's a typical Rat in a Maze Problem (A Typical Backtracking Algorithm to be used)

### Product Manager at Pocket Gems was asked...

Sep 15, 2012
 If Pocket Gems had a bunch of new game ideas, how should we pick the best one?4 AnswersI talked about doing surveys in our games and outside our games, looking at metrics from existing games, evaluating the difficulty of the different game ideas, evaluating the technical challenges of the different concepts, and then balancing out all the costs and benefits.Build a quick prototype, skin it, and launch it against a test market to see if its metrics (hint: rev, arpdau) meet the baseline set by the average of other pocket gems games.Put them all on Kickstarter and see what sticksShow More ResponsesThere is no easy way to forecast that the game (or) for that matter new products would be successful. However, for products there is at-least ways to understand customer needs, competition and market. There is more research that can be done in building new products. Best way for games would be to create a rapid prototype and see the response and iterate on that.

### Product Manager at Amazon was asked...

Apr 4, 2011
 You're in charge of new business venture x. What do you evaluate in vetting the business potential? Now what is your estimate of the volume we could move (with numbers)?2 AnswersThe first part is a fairly simple new venture analysis with all the concerns that come with it. I didn't know what to make of the last part and I kind of think the interviewer was just trying to make me uncomfortable and see how I would react.That is a pretty typical question. It may be intimidating, but market potential sizing is a problem you would need to be able to solve as a product manager. Usually, the interviewer is looking for you to validate/justify assumptions you made and walk through the logic of how you arrive at your estimations -- to see how you would think, when an answer is not readily available, or the situation is ambiguous, with multiple possibilities, dimensions, or directions... such as for a new or emerging service or product, where reference or data points may be limited.

Mar 9, 2011
 What do you think facebook should do next?2 AnswersWhat I answered has since been announced as a plan in a press release, so I'm so thrilled they didn't make me an offer.Does that mean they stole your idea? I'm always confused about how to answer these because I think it's a way for them to pump the candidate for insights.

### Principal Product Marketing Manager at Atlassian was asked...

Jul 5, 2013
 If John Locke from lost was running for president of the island what would be his campaign slogan.4 AnswersI said I would never attack the oposite position but lay landmines of them. "John Locke, the reliable and visionary choice for the future.""Don't ever tell us what we can't do. Ever."Learn how to walk again before we can run!Show More ResponsesBut John Locke is dead. It's 'Smoky' that's taking his form. Smoky is already the president of the island especially after the death of Jacob. Smoky's slogan is 'tirihihik tirihihik, tirihihik tirihihik, (you know the sound that the smoke monster does).

### Product Manager at Campus Management Corporation was asked...

Aug 25, 2009
 What do you need from me to be sucessful ? (asked by hiring manager)2 AnswersIt was hard to guage what the interviewer was looking for. My response didn't seem to be what he was looking for.My view of success may be somewhat different from yours. So, for me to be successful in this position, I would need you to be direct in your expectations and honest with feedback.