Which are examples of countable sets? Select all that apply.

Which of the following are valid breadth-first traversals of this graph? Select all that apply.

True or False: This is a valid binary search tree.

Is the following statement true or false?

cons(w, <x, y, z>) = <w, x, y, z>

What are required building blocks for all graphs? Select all that apply.

Is the following statement true or false?

The individual elements that make up a string are taken from a finite set called an alphabet, and a language is a set of strings.

How many possible 3-tuples are there over the set {a, b}?

Which of the following are characteristics of tuples? Select all that apply.

What is the primary difference between a tuple and a list in computer science?

Is the statement below true or false?

(t, o, o, t) = (o, t, t, o)