The resistance 4R,16R,64R....`oo` are connected in series. Find their equivalent resistance.

Explanation

To find the equivalent resistance of the infinite series of resistors 4R, 16R, 64R, ..., we can follow these steps:

### Step 1: Identify the series of resistors
The resistors in the series are given as:
- First resistor (R1) = 4R
- Second resistor (R2) = 16R
- Third resistor (R3) = 64R
- And so on...
...