Question 344857There are 12 students from whom 5 are going to be chosen to represent their school at a conference. If Jack, Anna, or Chris, but only one of them, must be chosen, in how many ways can the students be chosen to go to the conference? ---- # of ways to pick 1 of Jack, Anna, or Chris: 3 ways # of ways to pick 4 of 9: 9C4 ---- # of ways to pick 5 of 12 randomly: 12C5 ----- Probability = [3*9C4]/12C5 = 0.4773 ======================================= Cheers, Stan H.