I applied for the position online, initially thinking it would go nowhere, like all my other online applications. A couple of days later, I received an email asking me to take an assessment test, which was essentially an IQ test. The test had about 30 questions, with 3 minutes allotted per question. The difficulty of the questions varied. I certainly didn't get all of them right; far from it.

After that, I received another email inviting me to schedule a phone interview. I responded, and then, a week later, they came to campus for a career fair. I approached them and mentioned that I had already begun the online application process, and they took over from there.

I interviewed four times within a week of approaching them at the career fair, and I received my offer the following week. Three of the interviews were technical, and the last one was with HR. The first two interviews were knock-out rounds. The last two interviews were actually back-to-back; I went from the third interview directly to the fourth.

Say I have a deck of 52 cards, a regular deck of cards. I put a joker in the deck somewhere and shuffle it up. Now I start dealing you cards until the joker shows up. Once it shows up, I stop dealing you cards. What is the probability that you have, in your set of cards, all 4 aces?

Implement a square root function.

Can you cover an 8x8 chessboard with dominoes if two corner squares are removed (not two from the same side, but two diagonally from each other)? A domino covers 2 squares, and no dominoes can hang over the side of the board.

There is a panel containing 3 light switches in front of you. Each switch controls a light in a room somewhere; it doesn't really matter where. You can play with the switches as much as you like, but you're only allowed to enter the room once. How do you tell which switch controls which light? Again, you can only enter the room once, so you cannot play with the switches after you enter the room, but you can play with them as much as you want before you enter the room. One entry is all it takes to determine which switch controls which light.