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Go here to find the list of practice problems.

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Answer Keys to Problems 1 to 10

Problem 1-A

$\displaystyle A$
Problem 1-B

$\displaystyle C$

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Problem 2-A

$\displaystyle C$
Problem 2-B

$\displaystyle D$

________________

Problem 3-A

$\displaystyle D$
Problem 3-B

$\displaystyle C$

________________

Problem 4-A

$\displaystyle C$
Problem 4-B

$\displaystyle C$

________________

Problem 5-A

$\displaystyle B$
Problem 5-B

$\displaystyle C$

________________

Problem 6-A

$\displaystyle E$
Problem 6-B

$\displaystyle D$

________________

Problem 7-A

$\displaystyle C$
Problem 7-B

$\displaystyle C$

________________

Problem 8-A

$\displaystyle B$
Problem 8-B

$\displaystyle D$

________________

Problem 9-A

$\displaystyle C$
Problem 9-B

$\displaystyle B$

________________

Problem 10-A

$\displaystyle D$
Problem 10-B

$\displaystyle E$

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Answer Keys to Problems 11 to 20

Problem 11-A

$\displaystyle D$
Problem 11-B

$\displaystyle C$

________________

Problem 12-A

$\displaystyle C$
Problem 12-B

$\displaystyle C$

________________

Problem 13-A

$\displaystyle D$
Problem 13-B

$\displaystyle E$

________________

Problem 14-A

$\displaystyle E$
Problem 14-B

$\displaystyle C$

________________

Problem 15-A

$\displaystyle A$
Problem 15-B

$\displaystyle C$

________________

Problem 16-A

$\displaystyle C$
Problem 16-B

$\displaystyle D$

________________

Problem 17-A

$\displaystyle B$
Problem 17-B

$\displaystyle C$

________________

Problem 18-A

$\displaystyle B$
Problem 18-B

$\displaystyle B$

________________

Problem 19-A

$\displaystyle D$
Problem 19-B

$\displaystyle A$

________________

Problem 20-A

$\displaystyle E$
Problem 20-B

$\displaystyle C$

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Answer Keys to Problems 21 to 30

Problem 21-A

$\displaystyle B$
Problem 21-B

$\displaystyle D$

________________

Problem 22-A

$\displaystyle D$
Problem 22-B

$\displaystyle E$

________________

Problem 23-A

$\displaystyle C$
Problem 23-B

$\displaystyle B$

________________

Problem 24-A

$\displaystyle E$
Problem 24-B

$\displaystyle D$

________________

Problem 25-A

$\displaystyle A$
Problem 25-B

$\displaystyle B$

________________

Problem 26-A

$\displaystyle C$
Problem 26-B

$\displaystyle C$

________________

Problem 27-A

$\displaystyle ?$
Problem 27-B

$\displaystyle ?$

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$\copyright$ 2013 to 2018 – Dan Ma