Answer: a) 
(b) 
(c) 
(d) 
Explanation:
The formal description of the given sets are as follows :-
a) The set containing the numbers 5, 9, and 27.
(b) The set that contains all the natural numbers less than 2.
(c) The set containing the empty string.
We know that in formal description, the empty string is denoted with 
.
Thus, the required set :
(d) The set containing nothing at all.
<span>The process of using or controlling two or more windows at a time is known as multitasking.</span>
Answer:
public static ArrayList manyStrings(ArrayList<String> list, int n){
ArrayList<String> newList = new ArrayList<String>();
for (int i=0; i<list.size(); i++) {
for (int j=0; j<n; j++) {
newList.add(list.get(i));
}
}
return newList;
}
Explanation:
Create a method called manyStrings that takes two parameters, list and n
Create a new ArrayList that will hold new values
Create a nested for loop. The outer loop iterates through the list. The inner loop adds the elements, n of this element, to the newList.
When the loops are done, return the newList
The answer to the given question above is the third option: <span>It was longer and less constrained than the music of the Classical period. The Romantic Period in music actually has more freedom in design and form. During this period, music were even more artistic and intellectual as well. Romantic Period occurred the late 18th century until early 19th century.</span>
