num_par= [2,4,6,8,10,12,14,16,18,]
num_par.append(20)
x=int(input("Agregue un numero par"))
num_par.append(x)
x2=int(input("Elimine un numero de la lista"))
num_par.remove(x2)
del num_par[5]
print(num_par)
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