Can someone explain, why it is None.Plss

Question

a =[1,5,7]
b=[2,4,6]
C=a.extend(b)
print(c)

Output=None.

Answer 1

a.extend(b) returns None.
Here is the right code:
a = [1, 5, 7]
b = [2, 4, 6]
a.extend(b)
print(a)

If what you wanted is to make a new variable c, then simply:
c = a + b

Answer 2

I fixed your code. See this code:

https://code.sololearn.com/cQx5DhPgpwRk/?ref=app

Answer 3

Case sensitive dude