Could any one say y it is false

Question

https://code.sololearn.com/cAPB3sCT6sag/?ref=app

Answer 1

a=[1,2,3,4,5]
b=[1,2,3,4,5]
Here,a is same as b
Then what is the need of representing two [] square bracket i.e b=[[1,2,3,4,5]]

Answer 2

Ok
Thank you

Answer 3

Vikash gud example

Answer 4

it check if the entire array a is in array b. not each value of array a is in b.

if
b = [1,2,3,4,5,[1,2,3,4,5]]
then a in b will be true