“The magnitude of effective capacitance in series connection of capacitors increases.” Is this statement true or false?

Three capacitors of capacitances $2 \;pF$,$3 \;pF$,and $4 \;pF$ are connected in parallel.
$(a)$ What is the total capacitance of the combination?
$(b)$ Determine the charge on each capacitor if the combination is connected to a $100 \;V$ supply.

Four capacitors of equal capacitance have an equivalent capacitance $C_1$ when connected in series and an equivalent capacitance $C_2$ when connected in parallel. The ratio $\frac{C_1}{C_2}$ is:

Three capacitors of $1\,\mu F$,$2\,\mu F$,and $4\,\mu F$ are connected in series to a $10\,V$ source. The charge on the plates of the middle capacitor is:

Four capacitors are connected as shown in the figure. If $C_1, C_2, C_3$ and $C_4$ are in the ratio of $1: 2: 3: 4$,then the ratio of the charges on the capacitors $C_2$ and $C_4$ is

Three capacitors each of capacitance $1\,\mu F$ are connected in parallel. To this combination,a fourth capacitor of capacitance $1\,\mu F$ is connected in series. The resultant capacitance of the system is.......$\mu F$