The keys of a dictionary must be of …………… types.

1. integer
2. mutable
3. immutable
4. any of these

Following set of commands is executed in shell, what will be the output?

>>>str = "hello"
>>>str[:2]
>>>

1. he
2. lo
3. olleh
4. hello

What data type is the object below ?
L = 1, 23, 'hello', 1

1. list
2. dictionary
3. array
4. tuple

To store values in terms of key and value, what core data type does Python provide ?

1. list
2. tuple
3. class
4. dictionary