What does not usually synchronize among devices using the same e-reader app?
account information
bookmarks
downloads
purchases

The answer is Downloads.

Downloads must be saved in local storage such as memory and hard drive. If you are using two or more devices, then these items must be downloaded in your local memory and it will take time, depending on the size of the document you are reading.

Account information, bookmarks and purchases can be saved and synchronized as these are small information and sizes.

you have to email it to yourself from your phone then download it to either google drive or you computer files. then you can go to where ever you saved it and select it and then copy and paste it. or you could attach it to your question when you are writing it which would be much easier. for example: go to the attachment.

yes we can change both the color of the value of a cell as well as background color of a cell at the same time .

as we know that excel sheet consists of columns and rows.

and intersection of column and row is called cell.

we can change color of the cell and background of the cell at the same time.

hence the statement that

can a person change color of the cell and background of the cell at the same time is true.