1. The problem statement, all variables and given/known data Of 27 students in a class, 11 have blue eyes, 13 have brown eyes, 3 have green eyes. If 3 students are chosen at random what are the odds of the following occurring? Only 1 has green eyes. 2. Relevant equations Odds = P( s )/P( f ) = P( s )/( 1 - P( s )) Probability success = P( s ) Probability fail = P( f ) 3. The attempt at a solution P( s ) = (3/27) * (24/26) * (23/25) = 92/975 P( f ) = 1 - P( s ) = 883/975 Therefore: Odds = 92/883 I went over this problems many many times, and i believe this is the correct answer, but the back of the book says the answer is 92/233. There is a chance the back of the book is wrong. any ideas? thanks a lot.