Which comparison operation returns True if variable x is not equal to variable y?
A. x .ne. y
B. x neq y
C. x <> y
D. x != y
Answer: D
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A class declared as final _________________________________
a) cannot be changed. b) cannot have subclasses. c) cannot have superclasses. d) has several abstract methods. e) cannot be used in a program.
A bond pays interest at 7 percent a year. The interest is taxed at a rate of 28 percent. What interest rate would a nontaxable bond need to pay to yield the same after-tax income as the taxable bond?
Its easier to work this problem with the rates in decimal form. So at the beginning divide the given rates by 100. At the end, convert the result to a percent by multiplying by 100. Let v = value of taxable bond. Taxable interest = 0.07v Tax on interest = 0.28*0.07v After-tax income — taxable interest — tax on interest = (0.07v) — (0.28 * 0.07v) = (1 — 0.28) * (0.07v) — 0.72 * 0.07v after factoring out 0.07v after doing the subtraction
Which of the following classifications of viruses can change its own code to avoid detection?
A. Stealth B. Multipartite C. Polymorphic D. Worm
Which of the following is NOT a reason for using procedures?
(A) They break a complex problem down into smaller pieces. (B) They make a program run faster. (C) They can be reused easily. (D) They make it easier for a team of people to work together on a single program.