Question

what is the value of R

Answer 1

the other two resistance are in series so 2r,2r

now 2R ,2R and R are in parallel.


so
total R=1/2R+1/2R+1/R

=1+1+2/2R
=3/2R.


I hope you understand it ☺️☺️☺️☺️☺️