All notices, requests and demands to or upon the undersigned, shall be in writing and shall be deemed to have been duly given or made (a) when delivered, if by hand, (b) three (3) days after being sent, postage prepaid, if by registered or certified mail, (c) when confirmed electronically, if by facsimile, or (d) when delivered, if by a recognized overnight delivery service in each event, to the numbers and/or address set forth beneath the signature of the undersigned.