Which of the following statement is not correct ?

1. We can write content into a text file opened using 'w' mode.
2. We can write content into a text file opened using 'w+' mode.
3. We can write content into a text file opened using 'r' mode.
4. We can write content into a text file opened using 'r+' mode.

Which of the following option is the correct Python statement to read and display the first 10 characters of a text file "Notes.txt" ?

1. F = open('Notes.txt') ; print(F.load(10))
2. F = open('Notes.txt') ; print(F.dump(10))
3. F = open('Notes.txt') ; print(F.read(10))
4. F= open('Notes.txt') ; print(F.write(10))

Which function is used to read all the characters ?

1. read()
2. readcharacters()
3. readall()
4. readchar()

Which function is used to read a single line from file ?

1. readline()
2. readlines()
3. readstatement()
4. readfullline()