How to print list with even index without loop

Question

list1=[1,2,3,4,5]
list2=[6,7,8,9,10,11]
list1.extend(list2)
list1.remove(11)
print(list1)
Now I have to print [2,4,6,8,10]

Answer 1

a=[1,2,3,4]
print(a[0::2])