1) (1 v 1) v (1 v 0)=
2)(((1 v 0) v 1) v 1)
3) (0 & 1) & 1=
4) 1 & (1 & 1) & 1=
5) ((1 v 0) & (1 & 1) & (0 v 1)=

1) (1+1) + (1 +0)  = 1 + 1 = 1;

2) ((((1+0)+1)+1) = 1+0+1+1 = 1;

3)(0*1)*1 = 0 * 1 = 0;

4) 1 * (1*1) * 1 = 1 * 1 * 1 = 1;

5) (1+0) * (1*1) * (0+1) = 1 * 1 * 1 = 1;