Given three equal resistors, how many different combination of all the three resistor can be made

You are given three equal resistors. How many resistances can be obtained by joining them in series and parallel grouping ?

For the series combination of three resistors establish the relation : R=R_(1)+R_(2)+R_(3) where the symbols have their usual meanings. Calculate the equivalent resistance of the combination of three resistors of 6Omega , 9 Omega and 18 Omega joined in parallel.

Wire bond resistors are made by

How many types of combination of resistors are there and what are they ?

When three wires of unequal resistances are given the number of combinations they can be made to give different resistances is

A exists in the 5k(Omega) resistor, find the currents in the other three resistors.what is the potential difference between the points A and B?