Can anyone help me with this? In a class of 20 pupils, 11 have dark hair, 7 have blond hair and 2 have red hair. 2 Pupils are chosen at random to collect the homework. What is the probability that each have a different colour hair? The correct answer is 266/380 However I thought it would be 99/380. I arrived at that answer in the following way: 11/20 x 9/19 = 99/380 Where did I go wrong?