Чему равна переменная L2 ?

один вариант

>>> L1 = [2, 3, 4] 
>>> L2 = L1[:] 
>>> L1[0] = 24 
>>> L1 
[24, 3, 4] 
>>> L2

[2, 3, 4]

[4, 3, 2]

[24, 3, 4]

[24, 4, 3]