What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Explication

Capacitors in parallel simply add, and 750 picofarads is 0.750 nanofarads, so 5.0 + 5.0 + 0.750 = 10.750 nanofarads. The other answers come from applying the series formula or from mixing up the picofarad and nanofarad units.