In a survey of the dining preferences of 54 dormitory students at the end of the spring semester, the following facts were discovered about Adam's Lunch AL, Pizza Tower PT, and the Dining Hall DH.
?
24 liked AL but not PT
20 liked AL only
37 liked AL
24 liked PT
22 liked DH
9 liked PT and AL but not DH
12 liked PT and DH
?
How many liked only DH?
?
A. 10
B. 6
C. 74
D. 18
E. 22
Answer: B
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Evaluate the series.
A. -32 B. 13 C. 0 D. -24
Write out the first five terms of the sequence.an = 
A. - 
, - 
, 
, 
, 
B. 1, - 
, 1, 
, 1
C. - 
, 1 , 
, 1 , 
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