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# Answer to Question #15778 in Other Programming & Computer Science for Amber

Question #15778
I'm needing help with 3 homework questions. Could you please answer and explain. My answers would be 19. C, 20. C but I have no clue on 18.

18. If sales = 100, rate = 0.10, and expenses = 50 which of the following expressions is true?
a. sales >= expenses AND rate < 1
b. sales < 200 OR expenses < 100
c. expenses = rate OR sales = rate
d. two of the above
19. lf a is true, b is true, and c is false which of the following expressions is true?
a. a OR b AND c
b. a AND b AND c
c. a AND b OR c
d. two of the above
20. lf d is true, e is false, and f is false which of the following expressions is true?
a. e OR f AND d
b. f AND d OR e
c. d OR e AND f
d. two of the above
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