Test: Tuples, Dictionary and Sets - 2 - Software Development MCQ

Tuples are immutable and ordered, meaning their elements cannot be changed after creation and they maintain the order of insertion.

Sets are mutable and do not allow duplicate values, meaning each element in a set is unique.

Dictionaries are mutable, unordered collections of key-value pairs.

Sets are used to store a collection of unique elements, eliminating any duplicates.

Tuples can be used as keys in a dictionary because they are immutable and hashable.

The len() function returns the number of elements in the tuple, which is 3 in this case.

The .get() method returns the value associated with the specified key. If the key is not found, it returns the default value, which is 0 in this case.

The in operator checks if an element exists in the set. In this case, 3 is in the set, so it returns True.

The del statement deletes the key-value pair with the specified key from the dictionary. In this case, the key "banana" is deleted.

The values in the tuple are unpacked into variables a, b, and c. Then, their sum is printed, resulting in 6.

The key (3, 4) maps to the list [5, 6]. The index [1] accesses the second element of the list, which is 6.

The add() method adds a new element to the set. In this case, 6 is added, resulting in a set with six elements.

Slicing is used to extract a portion of the tuple. The indices 1 and 3 define the range, but the element at index 3 is not included, resulting in (2, 3).

The len() function returns the number of key-value pairs in the dictionary, which is 3 in this case.

The intersection() method returns a set containing the common elements between two sets. In this case, the common elements are 3 and 4, so {3, 4} is returned.