\[\boxed{\text{227\ (227).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ 2^{4} \cdot 2^{4} = 2^{4 + 4} = 2^{8}\]
\[2)\ 2^{4} + 2^{4} = = 2 \cdot 2^{4} = 2^{5}\]
\[3)\ 2^{n} \cdot 2^{n} = 2^{n + n} = 2^{2n}\]
\[4)\ 2^{n} + 2^{n} = 2^{n} \cdot 2 = 2^{n + 1}\]