-
sangeethmani
- Junior | Next Rank: 30 Posts
- Posts: 24
- Joined: Wed Oct 21, 2009 3:19 pm
xy+z=x(y+z), which of the following must be true?
1)x=0 and z=0
2)x=1 and y=1
3)y=1 and z=0
4)x=1 or y=0
5)x=1 or z=0
ans is 5
1)x=0 and z=0
2)x=1 and y=1
3)y=1 and z=0
4)x=1 or y=0
5)x=1 or z=0
ans is 5
