Question

calculate total resistance​

Answer 1

If the total resistance we have to find is between M and N then it will be-
1÷R= 1÷(1+1+1)+1÷1
or, 1÷R=1÷3+1
or, 1÷R=4÷3
or, R=3÷4
Therefore Equivalent Resistance = 3÷4
→Note that the resistances on the left and right are not to be counted.