First phone interview, asking about the details regarding the resume and some basic questions.

Then comes the online test, which costed me about two hours, finishing the coding, math, and brainteaser questions. The test was not hard, but it was time-consuming, and I remember there was a section where I was asked to learn a new programming language and finish a task, which was really interesting.

There was a man who had just finished decorating his new house. He went to the hardware shop and asked the salesman, "How much is this?" Salesman: "One is one dollar." The man: "Okay, I will take 600. Here is three dollars." Question: What did the man buy?