Which of following are valid lists? Why?

Question

I meet a strange problem in game. There are four items.
(1) a=[1,2,34]
(2) a={1','2','3'}
(3) b=[x,y,z)
(4) b=['x','y','z']

I choose (1) and (4), but it's error. Why?

Answer 1

1-correct it is list declarations.
2-wrong because it is a dictionary declarations.
3-wrong sign and where are x y z declaration.
4-correct it is a list declarations.
you are correct😊
you should told the developers team about this quiz. :/

Answer 2

Thank you!