Combination of Capacitors question from MHT CET 2023 (14 May, Shift 1)

Answer: (a)

1. 5 in parallel: $10\ \mu\text{F}$; then 2 of $2\ \mu\text{F}$ in series.
2. $\frac{1}{C} = \frac{1}{10} + \frac{2}{2} = \frac{11}{10}$.
3. $C = \frac{10}{11}\ \mu\text{F}$.
4. So the answer is (a) 5 in parallel and 2 in series.