You know, how to calculate resistance and currents in various circuits and shit? I need your help, I'm doing an entrance exam to the audio engineering program in Piteå tomorrow and they have questions of this nature.
Like, for example, this circuit:

For calculating the resistance in this circuit, am I right in thinking that the first part would be:
(1/R1) = 1/100 + 1/100 + 1/100
Second part:
(1/R2) = 1/100 + 1/100
Third part:
(1/R3) = 1/100
And the resistance of the whole circuit like so:
1/R = (1/R1) + (1/R2) + (1/R3)
PLZ HELP I DON'T UNDERSTAND THIS SHIT
Like, for example, this circuit:

For calculating the resistance in this circuit, am I right in thinking that the first part would be:
(1/R1) = 1/100 + 1/100 + 1/100
Second part:
(1/R2) = 1/100 + 1/100
Third part:
(1/R3) = 1/100
And the resistance of the whole circuit like so:
1/R = (1/R1) + (1/R2) + (1/R3)
PLZ HELP I DON'T UNDERSTAND THIS SHIT