This is the question [2,] how many no are there

Question

I wrote it has two bcz lists have null spaces at the end .But the correct answer is one.

Answer 1

You can end lists, tuples etc. with a comma, it doesn't make a difference. [1,] is the same as [1]. [1, 2,] is the same as [1, 2].

If a tuple has only one element you need to use a comma:

t = (1) # not a tuple but an integer
t = (1,) # tuple with one element
t = 1, # also a tuple with one element

These are all equal:

t = (1, 2,)
t = (1, 2)
t = 1, 2,
t = 1, 2

Answer 2

What ?? please explain more understandable.

Answer 3

The correct answer would be one. It is true that arrays have an implicit null character in memory, but the length of the array (in this case) is one because 2 is the only element it contains.

If you are programming in Python, try this:

my_list = [2]
print(len(my_list)) # output: 1

Edit: also, the null character is not a number, it is a special kind of character.