The Common Admission Test – CAT – for admission to prestigious Indian Institute of Management begins on Wednesday. Over two lakh candidates are expected to appear. The test will be conducted online in about 78 centres across 33 cities in a staggered format beginning tomorrow and ending on November 24.A total of 204,267 candidates have registered for CAT 2010, with the highest number of registration in Maharashtra where 30,296 candidates have registered for the test.