Mastering String Operations in Python

What will be the result of the following operation: `"hello".upper()`?

• "Hello"

• "HELLO"

• "hello"

• "HeLLo"

If `Y = "WORLD"`, what will `Y.lower()` return?

• "world"

• "World"

• "WORLD"

• "wORLD"

What does the function `Y.isupper()` return when `Y = "Python"`?

• True

• False

• None

• Error

Given `Y = "123abc"`, what will `Y.isalnum()` return?

• True

• False

• None

• Error

What will be the output of `len("Great Britain")`?

• 11

• 12

• 13

• 14

If `Y = "Hello, World!"`, what will `Y.find("World")` return?

• 5

• 6

• 7

• -1

What will `Y.isdigit()` return if `Y = "2023"`?

• True

• False

• None

• Error

What is the result of `chr(65)`?

• "A"

• "B"

• "C"

• "D"

If `Y = "Python"`, what will `Y[1:4]` return?

• "Pyt"

• "yth"

• "ytho"

• "ythn"

What will `Y.replace("o", "a")` return if `Y = "Hello, World!"`?

• "Hella, Warld!"

• "Hella, Warld"

• "Hella, World!"

• "Hello, Warld!"