Hudson Data Test Engineer interview questions

First round is Online Aptitude test to check our abilities with a series of 9 tasks and some questions to check interpersonal skills. Immediately after completion of the test , within 2 minutes, received mail from the company saying that am not selected. Not sure on what basis they are selecting though I have confident that I did correctly for more than 90% of the questions. Spent almost 1:30 hrs to complete the exam, I think they are simply wasting our time.