Вот: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 const n=5; var a: array[1..n,1..n] of integer; i,j,s: integer; begin s: =0; randomize; for i: =1 to n do begin for j: =1 to n do begin a[i,j]: =random(10); write(a[i,j]: 4); if (i+j) mod 3=0 then s: =s+a[i,j]; end; writeln; end; writeln('s=',s); end.
1)
A B ¬B A∨¬B (A∨¬B)∧A
0 0 1 1 0
0 1 0 0 0
1 0 1 1 1
1 1 0 1 1
2)
A B C A∧B ¬(A∧B) ¬(A∧B)∨C
0 0 0 0 1 1
0 0 1 0 1 1
0 1 0 0 1 1
0 1 1 0 1 1
1 0 0 0 1 1
1 0 1 0 1 1
1 1 0 1 0 0
1 1 1 1 0 1