Since I didn't sign any Non disclosure agreement, I can share following detail: Question 1: Problem 1: you are given two csv files: User file: UserID, UserName, Registration date Order file: UserID, OrderID, Order Date, Order Detail, Order Quantity. The problem is to create an application to display the following criteria: 1. Search the result (OrderID, Order Detail, Order Date and UserName) by UserID 2. The Avg quantity of Order Quantity by UserID Performance is the key in this problem, they will ask a lot of questions about optimization. Problem 2: There are four type of marbles, the user will pick N marbles out of those four. The chance of each marble is given, find the total quantity of each type of marble after the user has picked N marble input: chance of search marble for example: corresponding to marble , N = 100 output: Creative solution is good here. Question 2: There are plenty of time to solve the problems. You don't have to complete the problem, you just have to write clean code; they will go over the code with you. They will give you 1 hour to write the initial code, 30 minutes additional to add any improvement, and 30 m to 1 h to review the code. Question 3: They will left you in a small room with view of mid town Manhattan, with plenty of light, with a computer (Windows 7 enterprise, VMWare) with LAN connection, you can google, stackoverflow, msdn, any thing you want. They will expect you to use visual studio, no plugin, since they are using Microsoft stack.