String slicing means to create a sub string.

The tolower() method is used to convert all letters of a string into small letters.

The method used to convert all characters of a string in upper case is …………… .

1. toupper()
2. upper()
3. capital()
4. case()

The method used to count the number of characters in a string is …………… .

1. length()
2. len()
3. count()
4. None of these