A bag contains 5 red nd 3 blue balls. if 3 balls are drawn at random without replacement the probability that exactly two of three balls were red, the first ball being red is??

Total no of ways of selecting 3 balls out of total 8 balls=8C3

This is correct answer.

Total no. of selections=5C1*7C2 Total possible selections =5C2*3C1 Hence probablity=5C2*3C1 /5C1*7C2 =2/7