resistors in series add
resistors in parallel add inversally. the denominator of the answer(which is the fraction) will be your answer
The Attempt at a Solution
I added annotations to show my thought process
this last part was a good tricky question. but here's was my thought process.
since i need to find the points between A and B I need to do arithmetic on the points between A and B which is all the numbers in ohms
1 and 3 and 6 and 2 are in series. 4 ,12, 5 and 20 are in parallel.
with that said, 1+3+6+2 = 12 ohms
4*12/(4+12) = 48/16 = 3
5*20/(5+20) 100/25 = 4
12+3+4 = 19 ohms but its wrong.
any guidance will be appreciated