Resistors in Series

A circuit contains four resistors in series: 2 Ω, 4 Ω, 4 Ω, and 8 Ω. Determine the total resistance.

Hint
For series connections, the current in all resistors is the same.
Hint 2
$$$R_{series}=R_1+R_2+...+R_n$$$
For series connections, the current in all resistors is the same and the equivalent resistance for n resistors in series is:
$$$R_{series}=R_1+R_2+...+R_n$$$
$$$R_{series}=2\Omega+4\Omega+4\Omega+8\Omega=18\:\Omega$$$
18 Ω