It seems like there are three capacitors: C, 2C, and 3C. Let's assume they are connected in series.
In a series connection, the equivalent capacitance (C_eq) is given by the formula:
$\frac{1}{C_{eq}} = \frac{1}{C} + \frac{1}{2C} + \frac{1}{3C}$
Now, let's
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