PSUP

What will be the output of the following code?**

```python

arr = ["apple", "banana", "cherry"]

print(arr[1][2])

• a

• n

• e

• error

Answer explanation

Explanation: The element at index `1` is `"banana"`. The character at index `2` in `"banana"` is `"n"`.

What will be the output of the following pseudo-code?**

```

arr = ["hello", "world", "python"]

print(arr[0][-2])

• h

• L

• o

• Error

Answer explanation

Explanation: `arr[0]` is `"hello"`. The index `-2` refers to the second last character, which is `"l"`.

What will happen if you execute the following code?**

```python

arr = ["A", "B", "C"]

print(arr[3])

• C

• A

• B

• Error

Answer explanation

Explanation: The index `3` is out of range because `arr` has indices `0`, `1`, and `2` only.

Identify the error in the following code.**

```python

arr = ("one", "two", "three")

arr[1] = "four"

print(arr)

• No error

• IndexError

• SyntaxError

• TypeError

Answer explanation

Explanation: `arr` is a tuple, which is immutable, meaning elements cannot be reassigned.

What is the output of the following code?**

```python

arr = ["cat", "dog", "fox"]

print("-".join(arr))

• cat-dog-fox

• cat dog fox

• cat,dog,fox

• Error

Answer explanation

Explanation: The `join()` method concatenates elements of the list with `"-"` as a separator.

What is the output of the following code?**

```python

arr = ["red", "green", "blue"]

print(arr[::-1])

• ['red', 'green', 'blue']

• ['blue', 'green', 'red']

• Error

• None

Answer explanation

Explanation: `[::-1]` reverses the list.

What is the output of this pseudo-code?**

```

arr = ["apple", "banana", "cherry"]

print(len(arr[2]))

• 6

• 5

• 7

• Error

Answer explanation

Explanation: `"cherry"` has 6 characters.

What will happen if we execute this code?**

```python

arr = ["x", "y", "z"]

arr.append("w")

print(arr)

• ['x', 'y', 'z', 'w']

• ['w', 'x', 'y', 'z']

• ['x', 'y', 'z']

• Error

Answer explanation

Explanation: `append("w")` adds `"w"` to the end of the list.

What is the output of this code?**

```python

arr = ["hello", "world"]

arr.insert(1, "python")

print(arr)

• ['hello', 'world', 'python']

• ['hello', 'python', 'world']

• ['python', 'hello', 'world']

• Error

Answer explanation

Explanation: `insert(1, "python")` inserts `"python"` at index `1`.

What is the output of this code?**

```python

arr = ["1", "2", "3"]

print(sum(map(int, arr)))

• "123"

• 123

• 6

• error

Answer explanation

Explanation: `map(int, arr)` converts each element to an integer, and `sum()` adds them up.