The compound methane is a simple hydrocarbon contains one carbon bonded to four hydrogens. Ethane is a simple hydrocarbon which contains two carbon atoms and four hydrogen atoms. Similarly, propane with three carbons.
Looking at the portrait of a girl, Sheesha, a girl, said, "Her mother is my grandfather's only daughter who has only one daughter and no sons". How is Sheesha related to the girl in the portrait?