unit4practicetest

A certain game keeps track of the maximum and minimum scores obtained so far. If num represents the most recent score obtained, which of the following algorithms correctly updates the values of the maximum and the minimum?

• If num is greater than the minimum, set the minimum equal to num. Otherwise, if num is greater than the maximum, set the maximum equal to num.

• If num is less than the minimum, set the minimum equal to num. Otherwise, if num is greater than the maximum, set the maximum equal to num.

• If num is less than the minimum, set the minimum equal to num. Otherwise, if num is less than the maximum, set the maximum equal to num.

• If num is greater than the minimum, set the minimum equal to num. Otherwise, if num is less than the maximum, set the maximum equal to num.

The cost of a customer’s electricity bill is based on the number of units of electricity the customer uses.

• For the first 25 units of electricity, the cost is $5 per unit.

• For units of electricity after the first 25, the cost is $7 per unit.

Which of the following code segments correctly sets the value of the variable cost to the cost, in dollars, of using numUnits units of electricity?

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Which of the following Boolean expressions are equivalent to the expression num ≥ 15? Select two

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If the variables onTime and absent both have the value false, what is displayed as a result of running the code segment?

• Is anyone there?

• Better late than never.

• Hello. Is anyone there?

• Hello. Better late than never.

To attend a particular camp, a student must be either at least 13 years old or in grade 9 or higher, but must not yet be 18 years old. Let age represent a student’s age and let grade represent the student’s grade level. Which of the following expressions evaluates to true if the student is eligible to attend the camp and evaluates to false otherwise?

• ((age ≥ 13) OR (grade ≥ 9)) AND (age ≤ 18)

• ((age ≥ 13) OR (grade ≥ 9)) AND (age < 18)

• ((age ≥ 13) OR (grade ≥ 9)) OR (age ≤ 18)

• ((age ≥ 13) OR (grade ≥ 9)) OR (age < 18)

Let n be an integer value. Which of the following expressions evaluates to true if and only if n is a two-digit integer (i.e., in the range from 10 to 99, inclusive)?

• n = (n MOD 100)

• (n ≥ 10) AND (n < 100)

• (n < 10) AND (n ≥ 100)

• (n > 10) AND (n < 99)

In the program, the initial value of x is 5 and the initial value of y is 10. What is displayed as a result of running the program?

• Foxtrot

• Hotel

• November

• Yankee

The following code segment is intended to set max equal to the maximum value among the integer variables x, y, and z. The code segment does not work as intended in all cases.

• x = 1
  y = 2
  z = 3

• x = 1
  y = 3
  z = 2

• x = 2
  y = 3
  z = 1

• x = 3
  y = 2
  z = 1

Three teams (Team A, Team B, and Team C) are participating in a trivia contest. Let scoreA represent the number of correct questions for Team A, scoreB represent the number of correct questions for Team B, and scoreC represent the number of correct questions for Team C. Assuming no two teams get the same number of correct questions, which of the following code segments correctly displays the team with the highest number of correct questions?

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If x has a value of 7 and y has a value of 20, what is displayed as a result of executing the code segment?

• ONE

• TWO

• THREE

• FOUR