This is an example.

6 (3b) Circle correct choices from among Y, N, Proof, and Witness and provide below a proof or witness as the case may be: 3 (1) 3X, Y EU N W X:= 803 4:= also3 LS RS = (803) 1 ( 21 803 ) c = (803 \\ ( 21803) ) = (803 ) ( 1 803 = (803)c = (803 )c = (803) LS = ( 803) = RS LS = RS 3 (ii) n = x'XA ( x9 \\ ( *9 ) = ( x\\x ) c ) Y W X:= 13 4= 13 LS RS = ( 83)\\ ( E3 )C = (83 \\ 83) = 2\\u = (83) = 13 = u LS =83 # 2= RS LS # RS5 (2c) Circle correct choices from among Y, N, Proof, and Witness and provide a proof or witness as the case may be, with complete reasoning, as in the notes on the facing side: 2 (i) n = z'X'XA (X\\Y X Z = xxZ\\ Yxz) Y N Pf W 3 (ii) n = Z'X'XA zx ( Xx) =(zxx\\ (zxx) Y N Pf W