Hello,<br/><br/>1. A number of people<b> have</b> applied for the job.<br/><br/>2. The number of homeless people<b> has</b> increased dramatically.<br/><br/> Why do we use plural verb with "a number of" while singular one with "the number of"?<br/><br/>Could any one explain it, please?<br/><br/>Thanks.<br/>