1. The problem statement, all variables and given/known data An air column closed at one end has a fundamental frequency of 500Hz. What are the frequencies of the first two overtones? Answers: 1500Hz 2500Hz 2. Relevant equations Overtone: f = (n+1)f n = overtone Harmonic: f = nf 3. The attempt at a solution f1 = (n+1)f = (1+1)500 = 1000Hz f2 = (2+1)500 = 1500Hz Im not getting it, what am I doing wrong? Its asking for frequency of overtone #1/overtone #2, I put the right values in the equation but I still dont get the right answer.