1. Theory: Let B, C, D be any sets. a) Disprove: If BOCCD and BCC, then CCD. b) Prove: If BUCCD and CnD=0), then C = 0). c) Prove: If P(B) CP(CND), then BCC. Note: All proofs must be done using the sets definitions given in the notes. A Venn Diagram is not a proof and will not earn you part marks.

Fig: 1