Ops Interview Questions | Glassdoor

# Ops Interview Questions

3,258

Ops interview questions shared by candidates

## Top Interview Questions

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### Photo Art Director - Pottery Barn at Williams-Sonoma was asked...

Nov 18, 2013
 I didn't find any question particularly difficult or unexpected. If forced to chose one it was when she asked how I would react to C-level executive/s shooting down a concept I developed for a seasonal campaign. 1 AnswerI explained that I would be okay with that. That said, I also explained I am diligent and if I felt very strongly that the direction I was offering was paramount for the direction/growth/evolution of the brand, I would fight for it.

Feb 17, 2011
 Given two die, what is the probability that the sum when rolled would add up to six?5 Answers0.141/65/36Show More Responses5/36 is right.... Combinations that add up to six: 1 and 5, 2 and 4, 3 and 3, 4 and 2, 5 and 1. So we have 5 successes. There are 36 individual outcomes because there are 6 sides on each die and 6*6 = 36 So we have 5/36.Foolish young ones how sooo foolish the answer is 5/36 ... 2 die = 36 possible outcomes (5,1/4,2/ 3,3/ 2,4/ 1,5) = 5 outcomes equaling 6 5/36

### Institutional Brokerage Co-op at Susquehanna International Group was asked...

Dec 4, 2012
 On the phone was asked two simple probability questions. What is the probability of being dealt a pair of cards? What is the probability of rolling the same side of a dice three times in a row.6 Answers1/17 and 1/36I think the second answer is 1/216 . Please explain ?The reason it is 1/36 is because it does not specify which side it must be. Therefore the first roll does not really count. Once you take the first roll it will decide what you need to roll the next two times. Therefore the math is 1*(1/6)*(1/6)= 1/36. If they asked what is the probability of rolling a 6 three times in a row then it would be 1/216.Show More ResponsesWas asked the card question also. For a pair of cards to be dealt from a 52card deck is 3/51. So first card drawn doesnt matter so you have 3 cards out of the 51 cards left that will match the first hence 3/51 as the probabilityAndyPeter

### Software Development Engineer Co-Op at Amazon was asked...

Apr 30, 2012
 How to print a link list reversely3 AnswersThe simplest solution would be: 1. Traverse a linked list from head to tail 2. During traversal, push all the elements of the node into a stack 3. Once the traversal is done, pop all elements and this will print the linked list in reverse order ... Looking fwd for an optimized solution ...void printLLreverse(Node *headNode) { //this is going to just iterate through the LL //add each element to a stack and //print the stack when we are finished stack llStack; Node* currNode = headNode; while(currNode) { llStack.push(currNode->data); currNode = currNode->next; } while(llStack.size() > 0) { cout << llStack.top(); llStack.pop(); } }the stack solution is good, you can also use recursion void printReverse(ListNode node) { if(node == null) return; printReverse(node.next); System.out.println(node.value); }

### Software Development Co-op at Amazon was asked...

May 6, 2011
 Given an array of size [i..n], find the product of all the elements of the array except for the element at index b, where b is an arbitrary element.2 AnswersThe trick here is that there's a slow way and a fast way to do this. The slow way is n^2 and trivial. The quick way (there are actually 2 but one is a bit faster) is as follows in pseudocode: for x in [i..n] : -- product = product*x product = product / b Essentially the solution is to run up a product and then divide everything by b.Swap the element at index B with 1 compute the product using a loop (as above) Index "B" will generate a "product x 1" condition. Which won't change the product. This is cheaper than either doing a division at the end (division is expensive), or checking "is the index b? then skip it" during each loop iteration. Swap the element at index B with the original value

### Co-Op at Johnson & Johnson was asked...

Oct 19, 2011
 What is your greatest strength and weakness?2 AnswersThey had a lot of basic questions like this.Being organize is not my greatest point. However, I have established a time management system that really helped me in my organization skills.

### Co-Op at ANSYS was asked...

Feb 15, 2015
 I was asked to print out the square of each number given an array of integers. The only catch was that I didn't have to use any loop.1 AnswerI used recursion

### Process Engineering Co-Op at PolyOne was asked...

Mar 5, 2019
 How would you describe your leadership style1 AnswerServant leader. I am someone who is trusted and has answers to most of the questions or can direct you in the right path. Strict commands aren’t nessacary your my main job is to be a problem solver.

### I&E Co-Op Interview at Dow was asked...

Jul 18, 2013
 Tell me about a time when you noticed someone doing something wrong. What did you do and how did that person take it or handle it?1 AnswerIts a very friendly interview environment they try to help you out as much as possible. now just waiting to hear back from them.

### International Co-op at Babson College was asked...

Apr 28, 2015
 What would you do if there was a natural disaster in x country where you had a student working and their parents called you panicked?1 AnswerI answered that I would first calm the parents down to assure them their child would be ok - assuming we have already been in touch with the student and working with the local embassy and our travel insurance company to find the fastest possible way to bring them back home.
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