Labels:bulletin board | cabinet | crt screen | flag | monitor | paper | plant | reckoner | sky | windowpane OCR: 720 KEFRESHER How CAN WE NEGATE D P(..) 3x.~p(...) THERE EXIS7S ()4xA AND ... A..... ((.) V~(-3-) I's not the se tat all nu mbers are even. 'There exists trat not even "It's not the case Hhat num there uxists een num hers have Mee "NOT GKEEN Property LOGIC REFRESHER TRARE that number uists numbel perty