CS151 Class Test 1, 27 October 2005, 13:00
Sample solutions <<Comments to correctors in brackets>>

1. y
2. n
3. n
4. n
5. n
6. n
7. y
8. n
9. y
10. n
<<Because the ambiguity might have caused a student not pick any answer, for questions 7-10 also check the blanks in the
truth table that they've filled in. If a student fills in the blanks in the truth table correctly (order of the first three
rows doesn't matter), give them full marks for 7-10 regardless of what answers they've given for those questions.>>