So here I have cyclopropane and cyclohexane, six carbon atoms and three carbon atoms here. Now, the formula for cycle alkanes is not the same as the formula for linear alkanes. The formula for cycloalkanes are CNH, two N. And we can see that this, in fact, is true. Here we have six H atoms and we have three carbon atoms. So three carbon atoms, that means we'll have two times three six H atoms. Likewise, here we have six carbons.