1. The problem statement, all variables and given/known data The question goes like this: 15 men , 10 ladies , 8 girls and boys took part in a lucky draw , A winner was picked at random, after which another winner was picked from the remaining people. Find the probability that among the two winners , only one of the is an adult. I understand already! thanks for the PM 2. Relevant equations 3. The attempt at a solution I was trying to let An be the nth adult and Cn be the nth Children and my answer is A1C2+C1C2 or C1A2+C1C2 whereby my answer will be 25/40*15/39+15/40*15/39 or 15/40*25/39+15/40*15/39 however i am wrong..