[![enter image description here](https://i.stack.imgur.com/mBCzi.png)](https://i.stack.imgur.com/mBCzi.png)

We need to find the equivalent capacitance in this question.

As in the solution on this website:  

<https://www.toppr.com/ask/question/take-c140mu-f-and-c260mu-f-in-the-figure-calculate-the-equivalent-capacitance-of-the/>

C1 and C1 are in series.

But there is a wire between them, the thumb rule for series combination is that there should be only one path. So C1 and C1 should be in parallel as there is a bifurcation. I'm confused the rule of thumb isn't working here, is this an exception??