I applied and I got the multiple choice quiz on Objective-C and Swift. The questions seemed fair, however, you are given about 20 minutes to answer 14 questions. A fair amount of these questions contain code, mostly Objective-C. I'm not sure how one is supposed to adequately answer all of the questions as well as read and comprehend the wordy questions in the time allotted. I ended up getting bogged down trying to follow code line by line and couldn't complete the last question. General rule of thumb. If you have a multiple choice word problem with code, then give at least 2 mins for each question. I've worked for a lot of large tech companies in and around Asia. Please understand that a lot of senior engineers aren't going around answering multiple choice questions all day. It is understandable that these people should be given more time to get what you want to ask them. Like I said before, the questions are fair, just not enough time to answer them in a satisfactory way. Then again, that could be "Hacker-Rank"'s (the company that they outsourced this to), thing.