Edit to put answer in white
<font color="white">Answer: Not Satisfiable
Reason:
[ QUOTE ]
<font color="white"> 10. The answer to question 16 is
(A) D
(B) A
(C) E
(D) B
(E) C
16. The answer to question 10 is
(A) D
(B) C
(C) B
(D) A
(E) E
[/ QUOTE ]
10: A 16: D is the only thing that works here
And
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<font color="white">
6. The answer to question 17 is
(A) C
(B) D
(C) E
(D) none of the above
(E) all of the above
17. The answer to question 6 is
(A) C
(B) D
(C) E
(D) none of the above
(E) all of the above
[/ QUOTE ]
6
and 17: D is the only thing that works here. So 16 and 17 are both D necessarily, but:
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<font color="white"> 2. The only two consecutive questions with identical answers are questions
(A) 6 and 7
(B) 7 and 8
(C) 8 and 9
(D) 9 and 10
(E) 10 and 11
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Forbids 16 and 17 from being the same. Ergo there is no solution that satisfies the constraints. </font>