To find the downloaded JEE formula book, check the "Downloads" folder on your device. If you're using a smartphone, go to the file manager or the "Files" app and look for the "Downloads" section. On a PC, you can access it through the file explorer.

To find your downloaded JEE important formula book, you can try these steps depending on the device you're using:

1. On Android:

Open the "Files" or "Downloads" app on your phone.

You should be able to find the book in the "Downloads" folder.

2. On a Computer:

Go to the "Downloads" folder on your computer. You can find this in File Explorer (Windows) or Finder (Mac).

If you're using a browser like Chrome or Firefox, you can also check the download history.

If you still can’t locate it, try searching for the book by its name or file type (like PDF or EPUB) using the search bar on your device.