3:
g = 9.8
a = [round(g*i**2/2,2) for i in range(1,11)]
print(*a)
4:
from random import randint
n = 10
a = [randint(100,1000) for i in range(n)]
b = [int(input('Введите ' + str(i+1) + '-е число:')) for i in range(n)]
c = [a[i]+b[i] for i in range(n)]
print(a)
print(b)
print(c)