If two objects are unequal according to the equals(Object) method, it is required that calling hashCode on each of the objects must produce distinct results as it is good for performance.

Canvas Course Content   Consider the following code. class Apple {  // rep-inv:  name != null  private String name;  public Apple (String name) {        if (name == null) throw new NPE(…);     this.name = name;  }  @Override public boolean equals (Object o) {     if (!(o instanceof Apple)) { return false; }     Apple a = (Apple) o;          return name.equals(a.name);  }  @Override public int hashCode() { // … }  @Override public String toString() { return name; }} class AppleTracker extends Apple {  private static Set inventory = new HashSet ();  public AppleTracker (String name) { super(name); inventory.add(name);}  public static Set getInventory() { return Collections.unmodifiableSet(inventory);}} // client codeApple a = new Apple(“Winesap”);AppleTracker at1 = new AppleTracker(“Winesap”);AppleTracker at2 = new AppleTracker(“Fuji”);   Is the following true/false:   The equals() method in the AppleTracker class is inherited from the Apple class.

Which of the following is not recommended by Bloch?

True or false: Pulmonary surfactant is secreted by Type I alveolar cells.

Given a directory with the files:  file_1 file_2 file_3 file_a file_b file_c Which of the following commands will list only: file_3, file_a, file_b 

Rashid is 14 years old. This child is MOST at risk of getting into trouble when:

When people enter formal operations, they:

The outcomes of the COVID-19 crisis suggest that many teenage problems are:

6. A project requires the completion of eight activities. The immediate predecessors (predecessors), normal activity time in weeks (normal time), maximum crashing time in weeks (max crash time), and per week crashing cost (crash cost) are shown in the table below. Activity 1 2 3 4 5 6 7 8 predecessors none none none 1,2 1,2,3 3 5,6 4,7 normal time 6 8 7 9 7 7 4 6 max crash time 3 2 3 4 1 2 2 3 crash cost $650 $550 $700 $465 $500 $385 $720 $810 Using the “normal time” values, find and report the early start times, early finish times, late start times, late finish times, and slack for each activity. Identify the critical path and project completion time.

5. A consulting project requires the completion of eight activities. The means and variances of the activity times for those activities (in weeks) are shown in the table below. Activity A B C D E F G H Mean 10 6 8 11 9 9 11 10 Variance 5 2 3 5 4 3 6 5 Consider the three paths of the network: (1) F-C-B, (2) A-H-E and (3) D-G. Compute the probability of the project taking less than 27 weeks for each path, as well as the overall probability of the project taking less than 27 weeks when all paths are considered.