Derive the probability that a receptor is occupied by a ligand using a model that treats the l ligands in solution as distinguishable particles. show that the expression is the same as obtained in the text (equation 6.19), where the ligands were treated as indistinguishable.

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.