(1) A person has notice of a fact if (a) he has actual knowledge of it, (b) he has received a notice or notification of it, or (c) from all facts and circumstances known to him at the time in question he has reason to know that it exists. A person knows or has knowledge of a fact if he has actual knowledge of it.

(2) A person notifies or gives a notice or notification to another by taking steps reasonably calculated to inform the other in ordinary course whether or not the other actually comes to know of it. A person receives a notice or notification when (a) it comes to his attention, (b) in the case of the landlord, it is delivered at the place of business of the landlord through which the rental agreement was made or at any place held out by him as the place for receipt of the communication, or (c) in the case of the tenant, it is delivered in hand to the tenant or mailed to him at the place held out by him as the place for receipt of the communication, or in the absence of such designation, to his last-known place of residence.

(3) Notice, knowledge or a notice or notification received by an organization is effective for a particular transaction from the time it is brought to the attention of the individual conducting that transaction, and in any event from the time it would have been brought to his attention if the organization had exercised reasonable diligence.