Two resistors are in series. Find the equivalent resistance if the values of the two resistances are as follows. a) 10 [Ω] and 20 [Ω]. b) 100 [Ω] and 1 [MΩ] (M stands for “Mega” or million). c) 3.0 [kΩ] and 6.7 [kΩ] (k stands for “kilo” or thousand). d) 400 [Ω] and 1 [Ω]. Repeat the above problem, assuming that the resistors are in parallel. Can anybody hel me with this, please? I have no idea how to start/do this. Thank you!